426135993831 has 12 divisors (see below), whose sum is σ = 628626147552. Its totient is φ = 278046180096.

The previous prime is 426135993809. The next prime is 426135993887. The reversal of 426135993831 is 138399531624.

426135993831 is a `hidden beast` number, since 4 + 2 + 6 + 13 + 599 + 3 + 8 + 31 = 666.

It is not a de Polignac number, because 426135993831 - 2⁵ = 426135993799 is a prime.

It is a super-2 number, since 2×426135993831² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426135993931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 503706426 + ... + 503707271.

It is an arithmetic number, because the mean of its divisors is an integer number (52385512296).

Almost surely, 2^426135993831 is an apocalyptic number.

426135993831 is a deficient number, since it is larger than the sum of its proper divisors (202490153721).

426135993831 is a wasteful number, since it uses less digits than its factorization.

426135993831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007413750 (or 1007413747 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 426135993831 in words is "four hundred twenty-six billion, one hundred thirty-five million, nine hundred ninety-three thousand, eight hundred thirty-one".