40638812952 has 32 divisors (see below), whose sum is σ = 104342900400. Its totient is φ = 13180155264.

The previous prime is 40638812947. The next prime is 40638812959. The reversal of 40638812952 is 25921883604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40638812959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22881327 + ... + 22883102.

Almost surely, 2^40638812952 is an apocalyptic number.

It is an amenable number.

40638812952 is an abundant number, since it is smaller than the sum of its proper divisors (63704087448).

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

40638812952 is a wasteful number, since it uses less digits than its factorization.

40638812952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45764475 (or 45764471 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 40638812952 in words is "forty billion, six hundred thirty-eight million, eight hundred twelve thousand, nine hundred fifty-two".