78372244936 has 16 divisors (see below), whose sum is σ = 148462888140. Its totient is φ = 38782141440.

The previous prime is 78372244927. The next prime is 78372244939. The reversal of 78372244936 is 63944227387.

It can be written as a sum of positive squares in 2 ways, for example, as 73598264100 + 4773980836 = 271290^2 + 69094^2 .

It is a super-2 number, since 2×78372244936² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78372244939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50496805 + ... + 50498356.

Almost surely, 2^78372244936 is an apocalyptic number.

It is an amenable number.

78372244936 is a deficient number, since it is larger than the sum of its proper divisors (70090643204).

78372244936 is a wasteful number, since it uses less digits than its factorization.

78372244936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100995264 (or 100995260 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 55.

The spelling of 78372244936 in words is "seventy-eight billion, three hundred seventy-two million, two hundred forty-four thousand, nine hundred thirty-six".