5156666515 has 64 divisors (see below), whose sum is σ = 8386882560. Its totient is φ = 2939235840.

The previous prime is 5156666513. The next prime is 5156666551.

5156666515 = 246² + 247² + ... + 2492².

5156666515 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5156666515 - 2¹ = 5156666513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5156666513) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 530721 + ... + 540349.

It is an arithmetic number, because the mean of its divisors is an integer number (131045040).

Almost surely, 2^5156666515 is an apocalyptic number.

5156666515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5156666515 is a deficient number, since it is larger than the sum of its proper divisors (3230216045).

5156666515 is a wasteful number, since it uses less digits than its factorization.

5156666515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9772.

The product of its digits is 810000, while the sum is 46.

The square root of 5156666515 is about 71809.9332613532. The cubic root of 5156666515 is about 1727.6523241482.

The spelling of 5156666515 in words is "five billion, one hundred fifty-six million, six hundred sixty-six thousand, five hundred fifteen".