5171991715 has 32 divisors (see below), whose sum is σ = 7091712000. Its totient is φ = 3584296320.

The previous prime is 5171991709. The next prime is 5171991749.

5171991715 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5171991715 - 2³ = 5171991707 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 332686 + ... + 347884.

It is an arithmetic number, because the mean of its divisors is an integer number (221616000).

Almost surely, 2^5171991715 is an apocalyptic number.

5171991715 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5171991715 is a deficient number, since it is larger than the sum of its proper divisors (1919720285).

5171991715 is a wasteful number, since it uses less digits than its factorization.

5171991715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15507.

The product of its digits is 99225, while the sum is 46.

The square root of 5171991715 is about 71916.5607840086. The cubic root of 5171991715 is about 1729.3621129394.

The spelling of 5171991715 in words is "five billion, one hundred seventy-one million, nine hundred ninety-one thousand, seven hundred fifteen".