521324324012 has 48 divisors (see below), whose sum is σ = 953298528000. Its totient is φ = 249136534080.

The previous prime is 521324323981. The next prime is 521324324033. The reversal of 521324324012 is 210423423125.

It is a super-2 number, since 2×521324324012² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 39792239 + ... + 39805337.

It is an arithmetic number, because the mean of its divisors is an integer number (19860386000).

Almost surely, 2^521324324012 is an apocalyptic number.

It is an amenable number.

521324324012 is a deficient number, since it is larger than the sum of its proper divisors (431974203988).

521324324012 is a wasteful number, since it uses less digits than its factorization.

521324324012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16566 (or 16564 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 521324324012 its reverse (210423423125), we get a palindrome (731747747137).

The spelling of 521324324012 in words is "five hundred twenty-one billion, three hundred twenty-four million, three hundred twenty-four thousand, twelve".