79938637916 has 12 divisors (see below), whose sum is σ = 143304631680. Its totient is φ = 38994457440.

The previous prime is 79938637897. The next prime is 79938637921. The reversal of 79938637916 is 61973683997.

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, 243715196 + ... + 243715523.

It is an arithmetic number, because the mean of its divisors is an integer number (11942052640).

Almost surely, 2^79938637916 is an apocalyptic number.

It is an amenable number.

79938637916 is a deficient number, since it is larger than the sum of its proper divisors (63365993764).

79938637916 is a wasteful number, since it uses less digits than its factorization.

79938637916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487430764 (or 487430762 counting only the distinct ones).

The product of its digits is 92588832, while the sum is 68.

The spelling of 79938637916 in words is "seventy-nine billion, nine hundred thirty-eight million, six hundred thirty-seven thousand, nine hundred sixteen".