451668421038 has 16 divisors (see below), whose sum is σ = 911624337360. Its totient is φ = 149174891136.

The previous prime is 451668421019. The next prime is 451668421063. The reversal of 451668421038 is 830124866154.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345311595 + ... + 345312902.

It is an arithmetic number, because the mean of its divisors is an integer number (56976521085).

Almost surely, 2^451668421038 is an apocalyptic number.

451668421038 is an abundant number, since it is smaller than the sum of its proper divisors (459955916322).

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

451668421038 is a wasteful number, since it uses less digits than its factorization.

451668421038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690624611.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 451668421038 in words is "four hundred fifty-one billion, six hundred sixty-eight million, four hundred twenty-one thousand, thirty-eight".