12715342785 has 36 divisors (see below), whose sum is σ = 22355119956. Its totient is φ = 6685882560.

The previous prime is 12715342771. The next prime is 12715342799. The reversal of 12715342785 is 58724351721.

12715342785 is a `hidden beast` number, since 12 + 7 + 1 + 534 + 27 + 85 = 666.

It is an interprime number because it is at equal distance from previous prime (12715342771) and next prime (12715342799).

It can be written as a sum of positive squares in 2 ways, for example, as 8156257344 + 4559085441 = 90312^2 + 67521^2 .

It is not a de Polignac number, because 12715342785 - 2⁷ = 12715342657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12715342785.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 198819 + ... + 254871.

Almost surely, 2^12715342785 is an apocalyptic number.

12715342785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12715342785 is a deficient number, since it is larger than the sum of its proper divisors (9639777171).

12715342785 is an equidigital number, since it uses as much as digits as its factorization.

12715342785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56206 (or 56132 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The spelling of 12715342785 in words is "twelve billion, seven hundred fifteen million, three hundred forty-two thousand, seven hundred eighty-five".