79114138687 has 4 divisors (see below), whose sum is σ = 79150750816. Its totient is φ = 79077526560.

The previous prime is 79114138651. The next prime is 79114138711. The reversal of 79114138687 is 78683141197.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79114138687 - 2¹⁹ = 79113614399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79114130687) 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, 18302823 + ... + 18307144.

It is an arithmetic number, because the mean of its divisors is an integer number (19787687704).

Almost surely, 2^79114138687 is an apocalyptic number.

79114138687 is a deficient number, since it is larger than the sum of its proper divisors (36612129).

79114138687 is a wasteful number, since it uses less digits than its factorization.

79114138687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36612128.

The product of its digits is 2032128, while the sum is 55.

The spelling of 79114138687 in words is "seventy-nine billion, one hundred fourteen million, one hundred thirty-eight thousand, six hundred eighty-seven".