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61334402140 = 225111423195919
BaseRepresentation
bin111001000111110100…
…001011010001011100
312212022111111110100201
4321013310023101130
52001103101332030
644102053033244
74300631546644
oct710764132134
9185274443321
1061334402140
1124014742150
12ba78925824
135a2604ba5b
142d7bbab524
1518de98b2ca
hexe47d0b45c

61334402140 has 48 divisors (see below), whose sum is σ = 140611000320. Its totient is φ = 22287631680.

The previous prime is 61334402137. The next prime is 61334402141. The reversal of 61334402140 is 4120443316.

61334402140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61334402099 and 61334402108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61334402141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215101 + ... + 411019.

It is an arithmetic number, because the mean of its divisors is an integer number (2929395840).

Almost surely, 261334402140 is an apocalyptic number.

It is an amenable number.

61334402140 is an abundant number, since it is smaller than the sum of its proper divisors (79276598180).

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

61334402140 is a wasteful number, since it uses less digits than its factorization.

61334402140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197362 (or 197360 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 61334402140 its reverse (4120443316), we get a palindrome (65454845456).

The spelling of 61334402140 in words is "sixty-one billion, three hundred thirty-four million, four hundred two thousand, one hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1423 2846 5692 7115 14230 15653 28460 31306 62612 78265 156530 195919 313060 391838 783676 979595 1959190 2155109 3918380 4310218 8620436 10775545 21551090 43102180 278792737 557585474 1115170948 1393963685 2787927370 3066720107 5575854740 6133440214 12266880428 15333600535 30667201070 61334402140