653660647255 has 32 divisors (see below), whose sum is σ = 989726750208. Its totient is φ = 402567388800.

The previous prime is 653660647247. The next prime is 653660647301. The reversal of 653660647255 is 552746066356.

It is not a de Polignac number, because 653660647255 - 2³ = 653660647247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 653660647196 and 653660647205.

It is a congruent 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, 10195876 + ... + 10259785.

It is an arithmetic number, because the mean of its divisors is an integer number (30928960944).

Almost surely, 2^653660647255 is an apocalyptic number.

653660647255 is a deficient number, since it is larger than the sum of its proper divisors (336066102953).

653660647255 is a wasteful number, since it uses less digits than its factorization.

653660647255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20455767.

The product of its (nonzero) digits is 27216000, while the sum is 55.

The spelling of 653660647255 in words is "six hundred fifty-three billion, six hundred sixty million, six hundred forty-seven thousand, two hundred fifty-five".