79188806827 has 4 divisors (see below), whose sum is σ = 85280253520. Its totient is φ = 73097360136.

The previous prime is 79188806783. The next prime is 79188806861. The reversal of 79188806827 is 72860888197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72860888197 = 7757 ⋅9392921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79188806827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79188206827) 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, 3045723327 + ... + 3045723352.

It is an arithmetic number, because the mean of its divisors is an integer number (21320063380).

Almost surely, 2^79188806827 is an apocalyptic number.

79188806827 is a deficient number, since it is larger than the sum of its proper divisors (6091446693).

79188806827 is a wasteful number, since it uses less digits than its factorization.

79188806827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091446692.

The product of its (nonzero) digits is 21676032, while the sum is 64.

The spelling of 79188806827 in words is "seventy-nine billion, one hundred eighty-eight million, eight hundred six thousand, eight hundred twenty-seven".