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61048208560 = 2452938516833
BaseRepresentation
bin111000110110110000…
…011011110010110000
312211120112222022120111
4320312300123302300
52000011320133220
644013430551104
74260555132223
oct706660336260
9184515868514
1061048208560
1123988138729
12b9b8b08494
1359ab976241
142d51b8d5ba
1518c47a815a
hexe36c1bcb0

61048208560 has 80 divisors (see below), whose sum is σ = 146891089440. Its totient is φ = 23567667200.

The previous prime is 61048208549. The next prime is 61048208579. The reversal of 61048208560 is 6580284016.

61048208560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8930904 + ... + 8937736.

It is an arithmetic number, because the mean of its divisors is an integer number (1836138618).

Almost surely, 261048208560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61048208560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73445544720).

61048208560 is an abundant number, since it is smaller than the sum of its proper divisors (85842880880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61048208560 is a wasteful number, since it uses less digits than its factorization.

61048208560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10726 (or 10720 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 61048208560 in words is "sixty-one billion, forty-eight million, two hundred eight thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 29 40 58 80 116 145 232 290 464 580 1160 2320 3851 6833 7702 13666 15404 19255 27332 30808 34165 38510 54664 61616 68330 77020 109328 111679 136660 154040 198157 223358 273320 308080 396314 446716 546640 558395 792628 893432 990785 1116790 1585256 1786864 1981570 2233580 3170512 3963140 4467160 7926280 8934320 15852560 26313883 52627766 105255532 131569415 210511064 263138830 421022128 526277660 763102607 1052555320 1526205214 2105110640 3052410428 3815513035 6104820856 7631026070 12209641712 15262052140 30524104280 61048208560