612388402504 has 16 divisors (see below), whose sum is σ = 1148383176300. Its totient is φ = 306152888832.

The previous prime is 612388402441. The next prime is 612388402517. The reversal of 612388402504 is 405204883216.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 606763102500 + 5625300004 = 778950^2 + 75002^2 .

It is a super-2 number, since 2×612388402504² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101009 + ... + 5219680.

Almost surely, 2^612388402504 is an apocalyptic number.

It is an amenable number.

612388402504 is a deficient number, since it is larger than the sum of its proper divisors (535994773796).

612388402504 is a wasteful number, since it uses less digits than its factorization.

612388402504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10328112 (or 10328108 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The spelling of 612388402504 in words is "six hundred twelve billion, three hundred eighty-eight million, four hundred two thousand, five hundred four".