623456546540564 has 18 divisors (see below), whose sum is σ = 1199252158739082. Its totient is φ = 283389339336400.

The previous prime is 623456546540497. The next prime is 623456546540627. The reversal of 623456546540564 is 465045645654326.

623456546540564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 532380864624400 + 91075681916164 = 23073380^2 + 9543358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 623456546540564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 644066679827 + ... + 644066680794.

It is an arithmetic number, because the mean of its divisors is an integer number (66625119929949).

Almost surely, 2^{623456546540564} is an apocalyptic number.

It is an amenable number.

623456546540564 is a deficient number, since it is larger than the sum of its proper divisors (575795612198518).

623456546540564 is a wasteful number, since it uses less digits than its factorization.

623456546540564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288133360647 (or 1288133360634 counting only the distinct ones).

The product of its (nonzero) digits is 1244160000, while the sum is 65.

The spelling of 623456546540564 in words is "six hundred twenty-three trillion, four hundred fifty-six billion, five hundred forty-six million, five hundred forty thousand, five hundred sixty-four".