79145641875 has 90 divisors (see below), whose sum is σ = 135217444692. Its totient is φ = 41164992000.

The previous prime is 79145641867. The next prime is 79145641877. The reversal of 79145641875 is 57814654197.

It is not a de Polignac number, because 79145641875 - 2³ = 79145641867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79145641877) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 889276831 + ... + 889276919.

Almost surely, 2^79145641875 is an apocalyptic number.

79145641875 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

79145641875 is a deficient number, since it is larger than the sum of its proper divisors (56071802817).

79145641875 is an frugal number, since it uses more digits than its factorization.

79145641875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 170 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 57.

The spelling of 79145641875 in words is "seventy-nine billion, one hundred forty-five million, six hundred forty-one thousand, eight hundred seventy-five".