79164786889 has 4 divisors (see below), whose sum is σ = 83331354640. Its totient is φ = 74998219140.

The previous prime is 79164786887. The next prime is 79164786917. The reversal of 79164786889 is 98868746197.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79164786889 - 2¹ = 79164786887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79164786887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083283847 + ... + 2083283884.

It is an arithmetic number, because the mean of its divisors is an integer number (20832838660).

Almost surely, 2^79164786889 is an apocalyptic number.

It is an amenable number.

79164786889 is a deficient number, since it is larger than the sum of its proper divisors (4166567751).

79164786889 is a wasteful number, since it uses less digits than its factorization.

79164786889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166567750.

The product of its digits is 292626432, while the sum is 73.

The spelling of 79164786889 in words is "seventy-nine billion, one hundred sixty-four million, seven hundred eighty-six thousand, eight hundred eighty-nine".