40173642816 has 28 divisors (see below), whose sum is σ = 106292763792. Its totient is φ = 13391214208.

The previous prime is 40173642787. The next prime is 40173642851. The reversal of 40173642816 is 61824637104.

It is a super-2 number, since 2×40173642816² (a number of 22 digits) contains 22 as substring.

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, 104618670 + ... + 104619053.

Almost surely, 2^40173642816 is an apocalyptic number.

It is an amenable number.

40173642816 is an abundant number, since it is smaller than the sum of its proper divisors (66119120976).

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

40173642816 is a wasteful number, since it uses less digits than its factorization.

40173642816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209237738 (or 209237728 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 40173642816 in words is "forty billion, one hundred seventy-three million, six hundred forty-two thousand, eight hundred sixteen".