402699626400 has 144 divisors (see below), whose sum is σ = 1321109443584. Its totient is φ = 106540922880.

The previous prime is 402699626353. The next prime is 402699626437. The reversal of 402699626400 is 4626996204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 402699626400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 355797 + ... + 965396.

It is an arithmetic number, because the mean of its divisors is an integer number (9174371136).

Almost surely, 2^402699626400 is an apocalyptic number.

402699626400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402699626400 is an abundant number, since it is smaller than the sum of its proper divisors (918409817184).

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

402699626400 is a wasteful number, since it uses less digits than its factorization.

402699626400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321343 (or 1321330 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 48.

It can be divided in two parts, 40269 and 9626400, that added together give a palindrome (9666669).

The spelling of 402699626400 in words is "four hundred two billion, six hundred ninety-nine million, six hundred twenty-six thousand, four hundred".