655216606612556 has 24 divisors (see below), whose sum is σ = 1213334365227264. Its totient is φ = 308950880028560.

The previous prime is 655216606612549. The next prime is 655216606612577.

It is a happy number.

655216606612556 is nontrivially palindromic in base 10.

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, 50154357110 + ... + 50154370173.

It is an arithmetic number, because the mean of its divisors is an integer number (50555598551136).

Almost surely, 2^{655216606612556} is an apocalyptic number.

It is an amenable number.

655216606612556 is a deficient number, since it is larger than the sum of its proper divisors (558117758614708).

655216606612556 is a wasteful number, since it uses less digits than its factorization.

655216606612556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100308727381 (or 100308727379 counting only the distinct ones).

The product of its (nonzero) digits is 116640000, while the sum is 62.

The spelling of 655216606612556 in words is "six hundred fifty-five trillion, two hundred sixteen billion, six hundred six million, six hundred twelve thousand, five hundred fifty-six".