40164368178 has 32 divisors (see below), whose sum is σ = 88435321920. Its totient is φ = 12059357760.

The previous prime is 40164368159. The next prime is 40164368197. The reversal of 40164368178 is 87186346104.

It is an interprime number because it is at equal distance from previous prime (40164368159) and next prime (40164368197).

It is a super-2 number, since 2×40164368178² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2784325 + ... + 2798712.

It is an arithmetic number, because the mean of its divisors is an integer number (2763603810).

Almost surely, 2^40164368178 is an apocalyptic number.

40164368178 is an abundant number, since it is smaller than the sum of its proper divisors (48270953742).

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

40164368178 is a wasteful number, since it uses less digits than its factorization.

40164368178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5583162.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 40164368178 in words is "forty billion, one hundred sixty-four million, three hundred sixty-eight thousand, one hundred seventy-eight".