40656832896 has 96 divisors (see below), whose sum is σ = 108427311720. Its totient is φ = 13498183680.

The previous prime is 40656832891. The next prime is 40656832927. The reversal of 40656832896 is 69823865604.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×40656832896² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40656832891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53425156 + ... + 53425916.

Almost surely, 2^40656832896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40656832896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54213655860).

40656832896 is an abundant number, since it is smaller than the sum of its proper divisors (67770478824).

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

40656832896 is an frugal number, since it uses more digits than its factorization.

40656832896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 57.

The spelling of 40656832896 in words is "forty billion, six hundred fifty-six million, eight hundred thirty-two thousand, eight hundred ninety-six".