521400032364 has 48 divisors (see below), whose sum is σ = 1247559401088. Its totient is φ = 169394563968.

The previous prime is 521400032359. The next prime is 521400032399. The reversal of 521400032364 is 463230004125.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840897 + ... + 1322840.

It is an arithmetic number, because the mean of its divisors is an integer number (25990820856).

Almost surely, 2^521400032364 is an apocalyptic number.

It is an amenable number.

521400032364 is an abundant number, since it is smaller than the sum of its proper divisors (726159368724).

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

521400032364 is a wasteful number, since it uses less digits than its factorization.

521400032364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164254 (or 2164252 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 521400032364 its reverse (463230004125), we get a palindrome (984630036489).

The spelling of 521400032364 in words is "five hundred twenty-one billion, four hundred million, thirty-two thousand, three hundred sixty-four".