61405776055232 has 84 divisors (see below), whose sum is σ = 142075185987744. Its totient is φ = 26255700817920.

The previous prime is 61405776055223. The next prime is 61405776055259. The reversal of 61405776055232 is 23255067750416.

It is a super-2 number, since 2×61405776055232² (a number of 28 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, 21364073 + ... + 24067304.

Almost surely, 2^{61405776055232} is an apocalyptic number.

It is an amenable number.

61405776055232 is an abundant number, since it is smaller than the sum of its proper divisors (80669409932512).

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

61405776055232 is a wasteful number, since it uses less digits than its factorization.

61405776055232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45431834 (or 45431817 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 53.

The spelling of 61405776055232 in words is "sixty-one trillion, four hundred five billion, seven hundred seventy-six million, fifty-five thousand, two hundred thirty-two".