521461324040496 has 80 divisors (see below), whose sum is σ = 1539572774202624. Its totient is φ = 148986985819392.

The previous prime is 521461324040491. The next prime is 521461324040513. The reversal of 521461324040496 is 694040423164125.

It is not an unprimeable number, because it can be changed into a prime (521461324040491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15394786 + ... + 35775998.

Almost surely, 2^{521461324040496} is an apocalyptic number.

521461324040496 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

521461324040496 is an abundant number, since it is smaller than the sum of its proper divisors (1018111450162128).

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

521461324040496 is a wasteful number, since it uses less digits than its factorization.

521461324040496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20457378 (or 20457372 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 51.

The spelling of 521461324040496 in words is "five hundred twenty-one trillion, four hundred sixty-one billion, three hundred twenty-four million, forty thousand, four hundred ninety-six".