40012312164 has 24 divisors (see below), whose sum is σ = 101849522208. Its totient is φ = 12124943040.

The previous prime is 40012312159. The next prime is 40012312199. The reversal of 40012312164 is 46121321004.

40012312164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151561657 + ... + 151561920.

It is an arithmetic number, because the mean of its divisors is an integer number (4243730092).

Almost surely, 2^40012312164 is an apocalyptic number.

40012312164 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40012312164 is an abundant number, since it is smaller than the sum of its proper divisors (61837210044).

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

40012312164 is a wasteful number, since it uses less digits than its factorization.

40012312164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303123595 (or 303123593 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 40012312164 its reverse (46121321004), we get a palindrome (86133633168).

The spelling of 40012312164 in words is "forty billion, twelve million, three hundred twelve thousand, one hundred sixty-four".