40367881920 has 56 divisors (see below), whose sum is σ = 128168028144. Its totient is φ = 10764768256.

The previous prime is 40367881901. The next prime is 40367881943. The reversal of 40367881920 is 2918876304.

40367881920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 40367881920.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21023979 + ... + 21025898.

Almost surely, 2^40367881920 is an apocalyptic number.

40367881920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40367881920 is an abundant number, since it is smaller than the sum of its proper divisors (87800146224).

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

40367881920 is a wasteful number, since it uses less digits than its factorization.

40367881920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42049897 (or 42049887 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 40367881920 in words is "forty billion, three hundred sixty-seven million, eight hundred eighty-one thousand, nine hundred twenty".