65606655660656 has 40 divisors (see below), whose sum is σ = 139470165842544. Its totient is φ = 29648830184960.

The previous prime is 65606655660647. The next prime is 65606655660709.

65606655660656 is nontrivially palindromic in base 10.

It is a congruent number.

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, 1077325301 + ... + 1077386196.

Almost surely, 2^{65606655660656} is an apocalyptic number.

It is an amenable number.

65606655660656 is an abundant number, since it is smaller than the sum of its proper divisors (73863510181888).

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

65606655660656 is a wasteful number, since it uses less digits than its factorization.

65606655660656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154711689 (or 2154711683 counting only the distinct ones).

The product of its (nonzero) digits is 1049760000, while the sum is 68.

The spelling of 65606655660656 in words is "sixty-five trillion, six hundred six billion, six hundred fifty-five million, six hundred sixty thousand, six hundred fifty-six".