645451300415262 has 64 divisors (see below), whose sum is σ = 1415127322844928. Its totient is φ = 194637401280000.

The previous prime is 645451300415209. The next prime is 645451300415279. The reversal of 645451300415262 is 262514003154546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97580262 + ... + 103984662.

It is an arithmetic number, because the mean of its divisors is an integer number (22111364419452).

Almost surely, 2^{645451300415262} is an apocalyptic number.

645451300415262 is an abundant number, since it is smaller than the sum of its proper divisors (769676022429666).

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

645451300415262 is a wasteful number, since it uses less digits than its factorization.

645451300415262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411865.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 645451300415262 in words is "six hundred forty-five trillion, four hundred fifty-one billion, three hundred million, four hundred fifteen thousand, two hundred sixty-two".