451021664206572 has 48 divisors (see below), whose sum is σ = 1061667359356800. Its totient is φ = 149017838480640.

The previous prime is 451021664206567. The next prime is 451021664206591. The reversal of 451021664206572 is 275602466120154.

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, 217381629 + ... + 219446612.

It is an arithmetic number, because the mean of its divisors is an integer number (22118069986600).

Almost surely, 2^{451021664206572} is an apocalyptic number.

It is an amenable number.

451021664206572 is an abundant number, since it is smaller than the sum of its proper divisors (610645695150228).

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

451021664206572 is a wasteful number, since it uses less digits than its factorization.

451021664206572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436829006 (or 436829004 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 451021664206572 in words is "four hundred fifty-one trillion, twenty-one billion, six hundred sixty-four million, two hundred six thousand, five hundred seventy-two".