426320256555 has 12 divisors (see below), whose sum is σ = 738955111440. Its totient is φ = 227370803472.

The previous prime is 426320256547. The next prime is 426320256559. The reversal of 426320256555 is 555652023624.

426320256555 is a `hidden beast` number, since 4 + 2 + 6 + 32 + 0 + 2 + 565 + 55 = 666.

It is not a de Polignac number, because 426320256555 - 2³ = 426320256547 is a prime.

It is a super-2 number, since 2×426320256555² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 9473783479 = 426320256555 / (4 + 2 + 6 + 3 + 2 + 0 + 2 + 5 + 6 + 5 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 426320256555.

It is not an unprimeable number, because it can be changed into a prime (426320256559) 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, 4736891695 + ... + 4736891784.

It is an arithmetic number, because the mean of its divisors is an integer number (61579592620).

Almost surely, 2^426320256555 is an apocalyptic number.

426320256555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

426320256555 is a deficient number, since it is larger than the sum of its proper divisors (312634854885).

426320256555 is a wasteful number, since it uses less digits than its factorization.

426320256555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9473783490 (or 9473783487 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 426320256555 in words is "four hundred twenty-six billion, three hundred twenty million, two hundred fifty-six thousand, five hundred fifty-five".