656023323216 has 80 divisors (see below), whose sum is σ = 1856293243200. Its totient is φ = 198714292224.

The previous prime is 656023323211. The next prime is 656023323247. The reversal of 656023323216 is 612323320656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656023323211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13837546 + ... + 13884873.

It is an arithmetic number, because the mean of its divisors is an integer number (23203665540).

Almost surely, 2^656023323216 is an apocalyptic number.

It is an amenable number.

656023323216 is an abundant number, since it is smaller than the sum of its proper divisors (1200269919984).

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

656023323216 is a wasteful number, since it uses less digits than its factorization.

656023323216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27722476 (or 27722470 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 656023323216 in words is "six hundred fifty-six billion, twenty-three million, three hundred twenty-three thousand, two hundred sixteen".