3637079994640 has 20 divisors (see below), whose sum is σ = 8456210987724. Its totient is φ = 1454831997824.

The previous prime is 3637079994623. The next prime is 3637079994641. The reversal of 3637079994640 is 464999707363.

It can be written as a sum of positive squares in 2 ways, for example, as 576147793936 + 3060932200704 = 759044^2 + 1749552^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (3637079994641) 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, 22731749887 + ... + 22731750046.

Almost surely, 2^{3637079994640} is an apocalyptic number.

It is an amenable number.

3637079994640 is an abundant number, since it is smaller than the sum of its proper divisors (4819130993084).

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

3637079994640 is a wasteful number, since it uses less digits than its factorization.

3637079994640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45463499946 (or 45463499940 counting only the distinct ones).

The product of its (nonzero) digits is 185177664, while the sum is 67.

The spelling of 3637079994640 in words is "three trillion, six hundred thirty-seven billion, seventy-nine million, nine hundred ninety-four thousand, six hundred forty".