61329256902 has 24 divisors (see below), whose sum is σ = 132884716536. Its totient is φ = 20442368736.

The previous prime is 61329256889. The next prime is 61329256939. The reversal of 61329256902 is 20965292316.

61329256902 is a `hidden beast` number, since 61 + 3 + 29 + 2 + 569 + 0 + 2 = 666.

It is a super-2 number, since 2×61329256902² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 810073 + ... + 882539.

It is an arithmetic number, because the mean of its divisors is an integer number (5536863189).

Almost surely, 2^61329256902 is an apocalyptic number.

61329256902 is an abundant number, since it is smaller than the sum of its proper divisors (71555459634).

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

61329256902 is a wasteful number, since it uses less digits than its factorization.

61329256902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119492 (or 119489 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 61329256902 in words is "sixty-one billion, three hundred twenty-nine million, two hundred fifty-six thousand, nine hundred two".