40156632064 has 44 divisors (see below), whose sum is σ = 80300330100. Its totient is φ = 20071743488.

The previous prime is 40156632049. The next prime is 40156632071. The reversal of 40156632064 is 46023665104.

It can be written as a sum of positive squares in 2 ways, for example, as 11457561600 + 28699070464 = 107040^2 + 169408^2 .

It is a super-2 number, since 2×40156632064² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5125302 + ... + 5133130.

Almost surely, 2^40156632064 is an apocalyptic number.

It is an amenable number.

40156632064 is a deficient number, since it is larger than the sum of its proper divisors (40143698036).

40156632064 is an equidigital number, since it uses as much as digits as its factorization.

40156632064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12858 (or 12840 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

It can be divided in two parts, 40156 and 632064, that added together give a triangular number (672220 = T₁₁₅₉).

The spelling of 40156632064 in words is "forty billion, one hundred fifty-six million, six hundred thirty-two thousand, sixty-four".