623506664524 has 6 divisors (see below), whose sum is σ = 1091136662924. Its totient is φ = 311753332260.

The previous prime is 623506664513. The next prime is 623506664533. The reversal of 623506664524 is 425466605326.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77938333062 + ... + 77938333069.

Almost surely, 2^623506664524 is an apocalyptic number.

It is an amenable number.

623506664524 is a deficient number, since it is larger than the sum of its proper divisors (467629998400).

623506664524 is a wasteful number, since it uses less digits than its factorization.

623506664524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155876666135 (or 155876666133 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 623506664524 in words is "six hundred twenty-three billion, five hundred six million, six hundred sixty-four thousand, five hundred twenty-four".