656463020430623 has 16 divisors (see below), whose sum is σ = 756260800680000. Its totient is φ = 558179398950912.

The previous prime is 656463020430589. The next prime is 656463020430631. The reversal of 656463020430623 is 326034020364656.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 656463020430623 - 2⁶ = 656463020430559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656463020430223) 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, 408429968 + ... + 410034101.

It is an arithmetic number, because the mean of its divisors is an integer number (47266300042500).

Almost surely, 2^{656463020430623} is an apocalyptic number.

656463020430623 is a deficient number, since it is larger than the sum of its proper divisors (99797780249377).

656463020430623 is a wasteful number, since it uses less digits than its factorization.

656463020430623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818464994.

The product of its (nonzero) digits is 11197440, while the sum is 50.

The spelling of 656463020430623 in words is "six hundred fifty-six trillion, four hundred sixty-three billion, twenty million, four hundred thirty thousand, six hundred twenty-three".