5166666615 has 128 divisors (see below), whose sum is σ = 9599606784. Its totient is φ = 2350080000.

The previous prime is 5166666613. The next prime is 5166666623.

5166666615 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5166666615 - 2¹ = 5166666613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5166666613) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 37712827 + ... + 37712963.

It is an arithmetic number, because the mean of its divisors is an integer number (74996928).

Almost surely, 2^5166666615 is an apocalyptic number.

5166666615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5166666615 is a deficient number, since it is larger than the sum of its proper divisors (4432940169).

5166666615 is a wasteful number, since it uses less digits than its factorization.

5166666615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its digits is 1166400, while the sum is 48.

The square root of 5166666615 is about 71879.5284834284. The cubic root of 5166666615 is about 1728.7683901177.

It can be divided in two parts, 51 and 66666615, that added together give a palindrome (66666666).

The spelling of 5166666615 in words is "five billion, one hundred sixty-six million, six hundred sixty-six thousand, six hundred fifteen".