78427183312 has 20 divisors (see below), whose sum is σ = 155486452000. Its totient is φ = 38301647328.

The previous prime is 78427183301. The next prime is 78427183319. The reversal of 78427183312 is 21338172487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78427183319) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 56995812 + ... + 56997187.

It is an arithmetic number, because the mean of its divisors is an integer number (7774322600).

Almost surely, 2^78427183312 is an apocalyptic number.

It is an amenable number.

78427183312 is a deficient number, since it is larger than the sum of its proper divisors (77059268688).

78427183312 is a wasteful number, since it uses less digits than its factorization.

78427183312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113993050 (or 113993044 counting only the distinct ones).

The product of its digits is 451584, while the sum is 46.

The spelling of 78427183312 in words is "seventy-eight billion, four hundred twenty-seven million, one hundred eighty-three thousand, three hundred twelve".