645146610506013 has 32 divisors (see below), whose sum is σ = 1075633857192960. Its totient is φ = 334146612360960.

The previous prime is 645146610506009. The next prime is 645146610506053. The reversal of 645146610506013 is 310605016641546.

It is not a de Polignac number, because 645146610506013 - 2² = 645146610506009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645146610506053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4143605343 + ... + 4143761036.

It is an arithmetic number, because the mean of its divisors is an integer number (33613558037280).

Almost surely, 2^{645146610506013} is an apocalyptic number.

It is an amenable number.

645146610506013 is a deficient number, since it is larger than the sum of its proper divisors (430487246686947).

645146610506013 is a wasteful number, since it uses less digits than its factorization.

645146610506013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8287366737.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 645146610506013 in words is "six hundred forty-five trillion, one hundred forty-six billion, six hundred ten million, five hundred six thousand, thirteen".