521103451404204 has 72 divisors (see below), whose sum is σ = 1319899777742000. Its totient is φ = 173349596880000.

The previous prime is 521103451404181. The next prime is 521103451404229. The reversal of 521103451404204 is 402404154301125.

521103451404204 is a `hidden beast` number, since 5 + 2 + 1 + 1 + 0 + 3 + 45 + 1 + 404 + 204 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 996758634 + ... + 997281294.

Almost surely, 2^{521103451404204} is an apocalyptic number.

It is an amenable number.

521103451404204 is an abundant number, since it is smaller than the sum of its proper divisors (798796326337796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521103451404204 is a wasteful number, since it uses less digits than its factorization.

521103451404204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578671 (or 578666 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 521103451404204 in words is "five hundred twenty-one trillion, one hundred three billion, four hundred fifty-one million, four hundred four thousand, two hundred four".