451564396315 has 4 divisors (see below), whose sum is σ = 541877275584. Its totient is φ = 361251517048.

The previous prime is 451564396279. The next prime is 451564396369. The reversal of 451564396315 is 513693465154.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451564396315 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45156439627 + ... + 45156439636.

It is an arithmetic number, because the mean of its divisors is an integer number (135469318896).

Almost surely, 2^451564396315 is an apocalyptic number.

451564396315 is a deficient number, since it is larger than the sum of its proper divisors (90312879269).

451564396315 is an equidigital number, since it uses as much as digits as its factorization.

451564396315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90312879268.

The product of its digits is 5832000, while the sum is 52.

The spelling of 451564396315 in words is "four hundred fifty-one billion, five hundred sixty-four million, three hundred ninety-six thousand, three hundred fifteen".