213689437874 has 16 divisors (see below), whose sum is σ = 361731337920. Its totient is φ = 93782198160.

The previous prime is 213689437859. The next prime is 213689437901. The reversal of 213689437874 is 478734986312.

It is a super-2 number, since 2×213689437874² (a number of 23 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, 167467574 + ... + 167468849.

It is an arithmetic number, because the mean of its divisors is an integer number (22608208620).

Almost surely, 2^213689437874 is an apocalyptic number.

213689437874 is a deficient number, since it is larger than the sum of its proper divisors (148041900046).

213689437874 is a wasteful number, since it uses less digits than its factorization.

213689437874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334936465.

The product of its digits is 48771072, while the sum is 62.

The spelling of 213689437874 in words is "two hundred thirteen billion, six hundred eighty-nine million, four hundred thirty-seven thousand, eight hundred seventy-four".