451221326256 has 40 divisors (see below), whose sum is σ = 1168591301104. Its totient is φ = 150028243200.

The previous prime is 451221326219. The next prime is 451221326273. The reversal of 451221326256 is 652623122154.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11820295 + ... + 11858406.

Almost surely, 2^451221326256 is an apocalyptic number.

It is an amenable number.

451221326256 is an abundant number, since it is smaller than the sum of its proper divisors (717369974848).

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

451221326256 is a wasteful number, since it uses less digits than its factorization.

451221326256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23679109 (or 23679103 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The spelling of 451221326256 in words is "four hundred fifty-one billion, two hundred twenty-one million, three hundred twenty-six thousand, two hundred fifty-six".