100405256451 has 16 divisors (see below), whose sum is σ = 134115464448. Its totient is φ = 66816050400.

The previous prime is 100405256443. The next prime is 100405256521. The reversal of 100405256451 is 154652504001.

It is not a de Polignac number, because 100405256451 - 2³ = 100405256443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100405256431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4099221 + ... + 4123641.

It is an arithmetic number, because the mean of its divisors is an integer number (8382216528).

Almost surely, 2^100405256451 is an apocalyptic number.

100405256451 is a deficient number, since it is larger than the sum of its proper divisors (33710207997).

100405256451 is a wasteful number, since it uses less digits than its factorization.

100405256451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26842.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 100405256451 in words is "one hundred billion, four hundred five million, two hundred fifty-six thousand, four hundred fifty-one".