13213937570 has 16 divisors (see below), whose sum is σ = 23786396280. Its totient is φ = 5285284224.

The previous prime is 13213937521. The next prime is 13213937593. The reversal of 13213937570 is 7573931231.

It can be written as a sum of positive squares in 4 ways, for example, as 11485623241 + 1728314329 = 107171^2 + 41573^2 .

It is a super-2 number, since 2×13213937570² (a number of 21 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, 344936 + ... + 381324.

Almost surely, 2^13213937570 is an apocalyptic number.

13213937570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13213937570 is a deficient number, since it is larger than the sum of its proper divisors (10572458710).

13213937570 is a wasteful number, since it uses less digits than its factorization.

13213937570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72709.

The product of its (nonzero) digits is 119070, while the sum is 41.

The spelling of 13213937570 in words is "thirteen billion, two hundred thirteen million, nine hundred thirty-seven thousand, five hundred seventy".