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61288980510 = 2352042966017
BaseRepresentation
bin111001000101000110…
…111010000000011110
312212012100000210121010
4321011012322000132
52001004434334020
644053351320050
74266540511242
oct710506720036
9185170023533
1061288980510
1123aa103920a
12ba65680026
135a19807554
142d75b46422
1518da9b7de0
hexe451ba01e

61288980510 has 16 divisors (see below), whose sum is σ = 147093553296. Its totient is φ = 16343728128.

The previous prime is 61288980491. The next prime is 61288980553. The reversal of 61288980510 is 1508988216.

It is a self number, because there is not a number n which added to its sum of digits gives 61288980510.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021482979 + ... + 1021483038.

It is an arithmetic number, because the mean of its divisors is an integer number (9193347081).

Almost surely, 261288980510 is an apocalyptic number.

61288980510 is an abundant number, since it is smaller than the sum of its proper divisors (85804572786).

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

61288980510 is a wasteful number, since it uses less digits than its factorization.

61288980510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042966027.

The product of its (nonzero) digits is 276480, while the sum is 48.

The spelling of 61288980510 in words is "sixty-one billion, two hundred eighty-eight million, nine hundred eighty thousand, five hundred ten".

Divisors: 1 2 3 5 6 10 15 30 2042966017 4085932034 6128898051 10214830085 12257796102 20429660170 30644490255 61288980510