79105071187 has 8 divisors (see below), whose sum is σ = 81271927296. Its totient is φ = 76958372232.

The previous prime is 79105071179. The next prime is 79105071191. The reversal of 79105071187 is 78117050197.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79105071187 - 2³ = 79105071179 is a prime.

It is a super-2 number, since 2×79105071187² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79105071107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5031333 + ... + 5047030.

It is an arithmetic number, because the mean of its divisors is an integer number (10158990912).

Almost surely, 2^79105071187 is an apocalyptic number.

79105071187 is a deficient number, since it is larger than the sum of its proper divisors (2166856109).

79105071187 is a wasteful number, since it uses less digits than its factorization.

79105071187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10078577.

The product of its (nonzero) digits is 123480, while the sum is 46.

The spelling of 79105071187 in words is "seventy-nine billion, one hundred five million, seventy-one thousand, one hundred eighty-seven".