79551834187 has 4 divisors (see below), whose sum is σ = 90916381936. Its totient is φ = 68187286440.

The previous prime is 79551834181. The next prime is 79551834233. The reversal of 79551834187 is 78143815597.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78143815597 = 92269 ⋅846913.

It is a de Polignac number, because none of the positive numbers 2^k-79551834187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79551834181) 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, 5682273864 + ... + 5682273877.

It is an arithmetic number, because the mean of its divisors is an integer number (22729095484).

Almost surely, 2^79551834187 is an apocalyptic number.

79551834187 is a deficient number, since it is larger than the sum of its proper divisors (11364547749).

79551834187 is a wasteful number, since it uses less digits than its factorization.

79551834187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11364547748.

The product of its digits is 8467200, while the sum is 58.

The spelling of 79551834187 in words is "seventy-nine billion, five hundred fifty-one million, eight hundred thirty-four thousand, one hundred eighty-seven".