78929381312 has 28 divisors (see below), whose sum is σ = 156666840336. Its totient is φ = 39454272000.

The previous prime is 78929381303. The next prime is 78929381339. The reversal of 78929381312 is 21318392987.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84437 + ... + 406187.

Almost surely, 2^78929381312 is an apocalyptic number.

It is an amenable number.

78929381312 is a deficient number, since it is larger than the sum of its proper divisors (77737459024).

78929381312 is a wasteful number, since it uses less digits than its factorization.

78929381312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325596 (or 325586 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The spelling of 78929381312 in words is "seventy-eight billion, nine hundred twenty-nine million, three hundred eighty-one thousand, three hundred twelve".