78992513372 has 6 divisors (see below), whose sum is σ = 138236898408. Its totient is φ = 39496256684.

The previous prime is 78992513363. The next prime is 78992513389. The reversal of 78992513372 is 27331529987.

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 as a sum of consecutive naturals, namely, 9874064168 + ... + 9874064175.

It is an arithmetic number, because the mean of its divisors is an integer number (23039483068).

Almost surely, 2^78992513372 is an apocalyptic number.

It is an amenable number.

78992513372 is a deficient number, since it is larger than the sum of its proper divisors (59244385036).

78992513372 is a wasteful number, since it uses less digits than its factorization.

78992513372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19748128347 (or 19748128345 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 56.

The spelling of 78992513372 in words is "seventy-eight billion, nine hundred ninety-two million, five hundred thirteen thousand, three hundred seventy-two".