78666124112 has 40 divisors (see below), whose sum is σ = 154948749312. Its totient is φ = 38679638400.

The previous prime is 78666124093. The next prime is 78666124151. The reversal of 78666124112 is 21142166687.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8614493 + ... + 8623619.

Almost surely, 2^78666124112 is an apocalyptic number.

It is an amenable number.

78666124112 is a deficient number, since it is larger than the sum of its proper divisors (76282625200).

78666124112 is a wasteful number, since it uses less digits than its factorization.

78666124112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18027 (or 18021 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The spelling of 78666124112 in words is "seventy-eight billion, six hundred sixty-six million, one hundred twenty-four thousand, one hundred twelve".