78626752136 has 8 divisors (see below), whose sum is σ = 147425160270. Its totient is φ = 39313376064.

The previous prime is 78626752129. The next prime is 78626752159. The reversal of 78626752136 is 63125762687.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 72323344900 + 6303407236 = 268930^2 + 79394^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4914172001 + ... + 4914172016.

Almost surely, 2^78626752136 is an apocalyptic number.

It is an amenable number.

78626752136 is a deficient number, since it is larger than the sum of its proper divisors (68798408134).

78626752136 is a wasteful number, since it uses less digits than its factorization.

78626752136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9828344023 (or 9828344019 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 53.

The spelling of 78626752136 in words is "seventy-eight billion, six hundred twenty-six million, seven hundred fifty-two thousand, one hundred thirty-six".