40406550156 has 72 divisors (see below), whose sum is σ = 116812200960. Its totient is φ = 11536602336.

The previous prime is 40406550137. The next prime is 40406550157. The reversal of 40406550156 is 65105560404.

40406550156 is a `hidden beast` number, since 4 + 0 + 40 + 65 + 501 + 56 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40406550156.

It is not an unprimeable number, because it can be changed into a prime (40406550157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 306915 + ... + 418341.

It is an arithmetic number, because the mean of its divisors is an integer number (1622391680).

Almost surely, 2^40406550156 is an apocalyptic number.

It is an amenable number.

40406550156 is an abundant number, since it is smaller than the sum of its proper divisors (76405650804).

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

40406550156 is a wasteful number, since it uses less digits than its factorization.

40406550156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112883 (or 112878 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 40406550156 in words is "forty billion, four hundred six million, five hundred fifty thousand, one hundred fifty-six".