645484523262 has 64 divisors (see below), whose sum is σ = 1304355225600. Its totient is φ = 212943740256.

The previous prime is 645484523209. The next prime is 645484523273. The reversal of 645484523262 is 262325484546.

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, 461389239 + ... + 461390637.

It is an arithmetic number, because the mean of its divisors is an integer number (20380550400).

Almost surely, 2^645484523262 is an apocalyptic number.

645484523262 is an abundant number, since it is smaller than the sum of its proper divisors (658870702338).

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

645484523262 is a wasteful number, since it uses less digits than its factorization.

645484523262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245.

The product of its digits is 11059200, while the sum is 51.

The spelling of 645484523262 in words is "six hundred forty-five billion, four hundred eighty-four million, five hundred twenty-three thousand, two hundred sixty-two".