645146061162504 has 32 divisors (see below), whose sum is σ = 1759489257716640. Its totient is φ = 195498806412800.

The previous prime is 645146061162481. The next prime is 645146061162539. The reversal of 645146061162504 is 405261160641546.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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, 1221867539817 + ... + 1221867540344.

It is an arithmetic number, because the mean of its divisors is an integer number (54984039303645).

Almost surely, 2^{645146061162504} is an apocalyptic number.

It is an amenable number.

645146061162504 is an abundant number, since it is smaller than the sum of its proper divisors (1114343196554136).

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

645146061162504 is a wasteful number, since it uses less digits than its factorization.

645146061162504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443735080181 (or 2443735080177 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 645146061162504 in words is "six hundred forty-five trillion, one hundred forty-six billion, sixty-one million, one hundred sixty-two thousand, five hundred four".