12731756715 has 16 divisors (see below), whose sum is σ = 22634234400. Its totient is φ = 6790270176.

The previous prime is 12731756701. The next prime is 12731756717. The reversal of 12731756715 is 51765713721.

12731756715 is a `hidden beast` number, since 1 + 2 + 73 + 1 + 7 + 567 + 15 = 666.

It is not a de Polignac number, because 12731756715 - 2¹⁸ = 12731494571 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (12731756717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47154520 + ... + 47154789.

It is an arithmetic number, because the mean of its divisors is an integer number (1414639650).

Almost surely, 2^12731756715 is an apocalyptic number.

12731756715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12731756715 is a deficient number, since it is larger than the sum of its proper divisors (9902477685).

12731756715 is an equidigital number, since it uses as much as digits as its factorization.

12731756715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94309323 (or 94309317 counting only the distinct ones).

The product of its digits is 308700, while the sum is 45.

The spelling of 12731756715 in words is "twelve billion, seven hundred thirty-one million, seven hundred fifty-six thousand, seven hundred fifteen".