12700387815 has 32 divisors (see below), whose sum is σ = 20431353600. Its totient is φ = 6736694784.

The previous prime is 12700387789. The next prime is 12700387841. The reversal of 12700387815 is 51878300721.

It is an interprime number because it is at equal distance from previous prime (12700387789) and next prime (12700387841).

It is not a de Polignac number, because 12700387815 - 2¹⁰ = 12700386791 is a prime.

It is a super-2 number, since 2×12700387815² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 6049636 + ... + 6051734.

It is an arithmetic number, because the mean of its divisors is an integer number (638479800).

Almost surely, 2^12700387815 is an apocalyptic number.

12700387815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12700387815 is a deficient number, since it is larger than the sum of its proper divisors (7730965785).

12700387815 is a wasteful number, since it uses less digits than its factorization.

12700387815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111.

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 12700387815 in words is "twelve billion, seven hundred million, three hundred eighty-seven thousand, eight hundred fifteen".