40402665144 has 48 divisors (see below), whose sum is σ = 109442408400. Its totient is φ = 13465275264.

The previous prime is 40402665133. The next prime is 40402665157. The reversal of 40402665144 is 44156620404.

40402665144 is a `hidden beast` number, since 40 + 40 + 2 + 66 + 514 + 4 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 40402665099 and 40402665108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411357 + ... + 500019.

It is an arithmetic number, because the mean of its divisors is an integer number (2280050175).

Almost surely, 2^40402665144 is an apocalyptic number.

It is an amenable number.

40402665144 is an abundant number, since it is smaller than the sum of its proper divisors (69039743256).

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

40402665144 is a wasteful number, since it uses less digits than its factorization.

40402665144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95004 (or 94997 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 40402665144 in words is "forty billion, four hundred two million, six hundred sixty-five thousand, one hundred forty-four".