79187281471 has 4 divisors (see below), whose sum is σ = 79285165200. Its totient is φ = 79089397744.

The previous prime is 79187281447. The next prime is 79187281487. The reversal of 79187281471 is 17418278197.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17418278197 = 173 ⋅100683689.

It is a cyclic number.

It is not a de Polignac number, because 79187281471 - 2¹⁵ = 79187248703 is a prime.

It is a super-3 number, since 3×79187281471³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79187281421) 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, 48940651 + ... + 48942268.

It is an arithmetic number, because the mean of its divisors is an integer number (19821291300).

Almost surely, 2^79187281471 is an apocalyptic number.

79187281471 is a deficient number, since it is larger than the sum of its proper divisors (97883729).

79187281471 is an equidigital number, since it uses as much as digits as its factorization.

79187281471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97883728.

The product of its digits is 1580544, while the sum is 55.

The spelling of 79187281471 in words is "seventy-nine billion, one hundred eighty-seven million, two hundred eighty-one thousand, four hundred seventy-one".