655216600665 has 32 divisors (see below), whose sum is σ = 1183087036800. Its totient is φ = 306726264320.

The previous prime is 655216600657. The next prime is 655216600699. The reversal of 655216600665 is 566006612556.

It is not a de Polignac number, because 655216600665 - 2³ = 655216600657 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68460900 + ... + 68470469.

It is an arithmetic number, because the mean of its divisors is an integer number (36971469900).

Almost surely, 2^655216600665 is an apocalyptic number.

It is an amenable number.

655216600665 is a deficient number, since it is larger than the sum of its proper divisors (527870436135).

655216600665 is a wasteful number, since it uses less digits than its factorization.

655216600665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136931417.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 655216600665 in words is "six hundred fifty-five billion, two hundred sixteen million, six hundred thousand, six hundred sixty-five".