645369238596 has 48 divisors (see below), whose sum is σ = 1606996371456. Its totient is φ = 200874530304.

The previous prime is 645369238571. The next prime is 645369238597. The reversal of 645369238596 is 695832963546.

It is not an unprimeable number, because it can be changed into a prime (645369238597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12429111 + ... + 12480926.

It is an arithmetic number, because the mean of its divisors is an integer number (33479091072).

Almost surely, 2^645369238596 is an apocalyptic number.

It is an amenable number.

645369238596 is an abundant number, since it is smaller than the sum of its proper divisors (961627132860).

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

645369238596 is a wasteful number, since it uses less digits than its factorization.

645369238596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24910188 (or 24910186 counting only the distinct ones).

The product of its digits is 251942400, while the sum is 66.

The spelling of 645369238596 in words is "six hundred forty-five billion, three hundred sixty-nine million, two hundred thirty-eight thousand, five hundred ninety-six".