40003381872 has 50 divisors (see below), whose sum is σ = 115781396808. Its totient is φ = 13334460192.

The previous prime is 40003381843. The next prime is 40003381969. The reversal of 40003381872 is 27818330004.

It is a super-2 number, since 2×40003381872² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15432108 + ... + 15434699.

Almost surely, 2^40003381872 is an apocalyptic number.

It is an amenable number.

40003381872 is an abundant number, since it is smaller than the sum of its proper divisors (75778014936).

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

40003381872 is a wasteful number, since it uses less digits than its factorization.

40003381872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30866827 (or 30866812 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

It can be divided in two parts, 40003 and 381872, that added together give a cube (421875 = 75³).

The spelling of 40003381872 in words is "forty billion, three million, three hundred eighty-one thousand, eight hundred seventy-two".