40044632652 has 18 divisors (see below), whose sum is σ = 101223932628. Its totient is φ = 13348210872.

The previous prime is 40044632627. The next prime is 40044632699. The reversal of 40044632652 is 25623644004.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1112350907 = 40044632652 / (4 + 0 + 0 + 4 + 4 + 6 + 3 + 2 + 6 + 5 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556175418 + ... + 556175489.

Almost surely, 2^40044632652 is an apocalyptic number.

It is an amenable number.

40044632652 is an abundant number, since it is smaller than the sum of its proper divisors (61179299976).

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

40044632652 is a wasteful number, since it uses less digits than its factorization.

40044632652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112350917 (or 1112350912 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 40044632652 in words is "forty billion, forty-four million, six hundred thirty-two thousand, six hundred fifty-two".