645101379008 has 28 divisors (see below), whose sum is σ = 1285863539520. Its totient is φ = 321104266752.

The previous prime is 645101379007. The next prime is 645101379047. The reversal of 645101379008 is 800973101546.

It is a self number, because there is not a number n which added to its sum of digits gives 645101379008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645101379001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22585973 + ... + 22614516.

It is an arithmetic number, because the mean of its divisors is an integer number (45923697840).

Almost surely, 2^645101379008 is an apocalyptic number.

It is an amenable number.

645101379008 is a deficient number, since it is larger than the sum of its proper divisors (640762160512).

645101379008 is a wasteful number, since it uses less digits than its factorization.

645101379008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45200724 (or 45200714 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 645101379008 in words is "six hundred forty-five billion, one hundred one million, three hundred seventy-nine thousand, eight".