451591415990 has 32 divisors (see below), whose sum is σ = 954973738656. Its totient is φ = 151583132160.

The previous prime is 451591415897. The next prime is 451591416007. The reversal of 451591415990 is 99514195154.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157897667 + ... + 157900526.

It is an arithmetic number, because the mean of its divisors is an integer number (29842929333).

Almost surely, 2^451591415990 is an apocalyptic number.

451591415990 is an abundant number, since it is smaller than the sum of its proper divisors (503382322666).

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

451591415990 is a wasteful number, since it uses less digits than its factorization.

451591415990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315798224.

The product of its (nonzero) digits is 1458000, while the sum is 53.

The spelling of 451591415990 in words is "four hundred fifty-one billion, five hundred ninety-one million, four hundred fifteen thousand, nine hundred ninety".