78982975692 has 36 divisors (see below), whose sum is σ = 204778250040. Its totient is φ = 26326685016.

The previous prime is 78982975639. The next prime is 78982975697. The reversal of 78982975692 is 29657928987.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 78982975692.

It is not an unprimeable number, because it can be changed into a prime (78982975697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2907123 + ... + 2934165.

Almost surely, 2^78982975692 is an apocalyptic number.

It is an amenable number.

78982975692 is an abundant number, since it is smaller than the sum of its proper divisors (125795274348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78982975692 is an frugal number, since it uses more digits than its factorization.

78982975692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54099 (or 27048 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 72.

The spelling of 78982975692 in words is "seventy-eight billion, nine hundred eighty-two million, nine hundred seventy-five thousand, six hundred ninety-two".