65615660705072 has 40 divisors (see below), whose sum is σ = 132661609589760. Its totient is φ = 31380489645120.

The previous prime is 65615660705051. The next prime is 65615660705107. The reversal of 65615660705072 is 27050706651656.

It is a junction number, because it is equal to n+sod(n) for n = 65615660704999 and 65615660705017.

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, 10152179 + ... + 15306797.

It is an arithmetic number, because the mean of its divisors is an integer number (3316540239744).

Almost surely, 2^{65615660705072} is an apocalyptic number.

It is an amenable number.

65615660705072 is an abundant number, since it is smaller than the sum of its proper divisors (67045948884688).

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

65615660705072 is a wasteful number, since it uses less digits than its factorization.

65615660705072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189241 (or 5189235 counting only the distinct ones).

The product of its (nonzero) digits is 15876000, while the sum is 56.

The spelling of 65615660705072 in words is "sixty-five trillion, six hundred fifteen billion, six hundred sixty million, seven hundred five thousand, seventy-two".