65993752656 has 60 divisors (see below), whose sum is σ = 198897843508. Its totient is φ = 20305769472.

The previous prime is 65993752607. The next prime is 65993752681. The reversal of 65993752656 is 65625739956.

65993752656 is a `hidden beast` number, since 6 + 59 + 9 + 3 + 7 + 526 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14637128256 + 51356624400 = 120984^2 + 226620^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65993752593 and 65993752602.

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, 17624665 + ... + 17628408.

Almost surely, 2^65993752656 is an apocalyptic number.

It is an amenable number.

65993752656 is an abundant number, since it is smaller than the sum of its proper divisors (132904090852).

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

65993752656 is a wasteful number, since it uses less digits than its factorization.

65993752656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35253100 (or 35253091 counting only the distinct ones).

The product of its digits is 91854000, while the sum is 63.

The spelling of 65993752656 in words is "sixty-five billion, nine hundred ninety-three million, seven hundred fifty-two thousand, six hundred fifty-six".