513664422504 has 32 divisors (see below), whose sum is σ = 1294272568320. Its totient is φ = 169873272576.

The previous prime is 513664422487. The next prime is 513664422541. The reversal of 513664422504 is 405224466315.

It is a happy number.

It is a super-2 number, since 2×513664422504² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84259489 + ... + 84265584.

It is an arithmetic number, because the mean of its divisors is an integer number (40446017760).

Almost surely, 2^513664422504 is an apocalyptic number.

It is an amenable number.

513664422504 is an abundant number, since it is smaller than the sum of its proper divisors (780608145816).

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

513664422504 is a wasteful number, since it uses less digits than its factorization.

513664422504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168525209 (or 168525205 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 513664422504 its reverse (405224466315), we get a palindrome (918888888819).

The spelling of 513664422504 in words is "five hundred thirteen billion, six hundred sixty-four million, four hundred twenty-two thousand, five hundred four".