426136979920 has 40 divisors (see below), whose sum is σ = 992485688904. Its totient is φ = 170159357952.

The previous prime is 426136979899. The next prime is 426136979929. The reversal of 426136979920 is 29979631624.

It can be written as a sum of positive squares in 4 ways, for example, as 168710633536 + 257426346384 = 410744^2 + 507372^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426136979929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4569709 + ... + 4662028.

Almost surely, 2^426136979920 is an apocalyptic number.

426136979920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426136979920 is an abundant number, since it is smaller than the sum of its proper divisors (566348708984).

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

426136979920 is a wasteful number, since it uses less digits than its factorization.

426136979920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9232327 (or 9232321 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 426136979920 in words is "four hundred twenty-six billion, one hundred thirty-six million, nine hundred seventy-nine thousand, nine hundred twenty".