40404407768 has 16 divisors (see below), whose sum is σ = 76027871160. Its totient is φ = 20130308800.

The previous prime is 40404407767. The next prime is 40404407831. The reversal of 40404407768 is 86770440404.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404407767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8984498 + ... + 8988993.

Almost surely, 2^40404407768 is an apocalyptic number.

It is an amenable number.

40404407768 is a deficient number, since it is larger than the sum of its proper divisors (35623463392).

40404407768 is a wasteful number, since it uses less digits than its factorization.

40404407768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17973778 (or 17973774 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 44.

The spelling of 40404407768 in words is "forty billion, four hundred four million, four hundred seven thousand, seven hundred sixty-eight".