426531223872 has 112 divisors (see below), whose sum is σ = 1350378482880. Its totient is φ = 131240369664.

The previous prime is 426531223861. The next prime is 426531223891. The reversal of 426531223872 is 278322135624.

426531223872 is a `hidden beast` number, since 4 + 26 + 531 + 2 + 23 + 8 + 72 = 666.

It is a congruent number.

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, 9471198 + ... + 9516125.

It is an arithmetic number, because the mean of its divisors is an integer number (12056950740).

Almost surely, 2^426531223872 is an apocalyptic number.

It is an amenable number.

426531223872 is an abundant number, since it is smaller than the sum of its proper divisors (923847259008).

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

426531223872 is a wasteful number, since it uses less digits than its factorization.

426531223872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18987357 (or 18987341 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The spelling of 426531223872 in words is "four hundred twenty-six billion, five hundred thirty-one million, two hundred twenty-three thousand, eight hundred seventy-two".