646038812204 has 24 divisors (see below), whose sum is σ = 1167083734656. Its totient is φ = 312587136000.

The previous prime is 646038812147. The next prime is 646038812227. The reversal of 646038812204 is 402218830646.

It is a super-2 number, since 2×646038812204² (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 7 ways as a sum of consecutive naturals, for example, 3602834 + ... + 3777894.

It is an arithmetic number, because the mean of its divisors is an integer number (48628488944).

Almost surely, 2^646038812204 is an apocalyptic number.

It is an amenable number.

646038812204 is a deficient number, since it is larger than the sum of its proper divisors (521044922452).

646038812204 is a wasteful number, since it uses less digits than its factorization.

646038812204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204857 (or 204855 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 646038812204 in words is "six hundred forty-six billion, thirty-eight million, eight hundred twelve thousand, two hundred four".