79973989016 has 8 divisors (see below), whose sum is σ = 149951229420. Its totient is φ = 39986994504.

The previous prime is 79973988979. The next prime is 79973989063. The reversal of 79973989016 is 61098937997.

It is a tau number, because it is divible by the number of its divisors (8).

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, 4998374306 + ... + 4998374321.

Almost surely, 2^79973989016 is an apocalyptic number.

It is an amenable number.

79973989016 is a deficient number, since it is larger than the sum of its proper divisors (69977240404).

79973989016 is a wasteful number, since it uses less digits than its factorization.

79973989016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9996748633 (or 9996748629 counting only the distinct ones).

The product of its (nonzero) digits is 46294416, while the sum is 68.

The spelling of 79973989016 in words is "seventy-nine billion, nine hundred seventy-three million, nine hundred eighty-nine thousand, sixteen".