402165907944 has 32 divisors (see below), whose sum is σ = 1029937083840. Its totient is φ = 130785660800.

The previous prime is 402165907943. The next prime is 402165907991. The reversal of 402165907944 is 449709561204.

402165907944 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (402165907943) 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, 204351612 + ... + 204353579.

It is an arithmetic number, because the mean of its divisors is an integer number (32185533870).

Almost surely, 2^402165907944 is an apocalyptic number.

It is an amenable number.

402165907944 is an abundant number, since it is smaller than the sum of its proper divisors (627771175896).

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

402165907944 is a wasteful number, since it uses less digits than its factorization.

402165907944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408705241 (or 408705237 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 402165907944 in words is "four hundred two billion, one hundred sixty-five million, nine hundred seven thousand, nine hundred forty-four".