521534023180 has 24 divisors (see below), whose sum is σ = 1124822029968. Its totient is φ = 202975403328.

The previous prime is 521534023169. The next prime is 521534023187. The reversal of 521534023180 is 81320435125.

It is not an unprimeable number, because it can be changed into a prime (521534023187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352387114 + ... + 352388593.

It is an arithmetic number, because the mean of its divisors is an integer number (46867584582).

Almost surely, 2^521534023180 is an apocalyptic number.

It is an amenable number.

521534023180 is an abundant number, since it is smaller than the sum of its proper divisors (603288006788).

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

521534023180 is a wasteful number, since it uses less digits than its factorization.

521534023180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704775753 (or 704775751 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 521534023180 in words is "five hundred twenty-one billion, five hundred thirty-four million, twenty-three thousand, one hundred eighty".