12739267815 has 16 divisors (see below), whose sum is σ = 21581818848. Its totient is φ = 6394612736.

The previous prime is 12739267811. The next prime is 12739267831. The reversal of 12739267815 is 51876293721.

It is a cyclic number.

It is not a de Polignac number, because 12739267815 - 2² = 12739267811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739267811) 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, 24978702 + ... + 24979211.

It is an arithmetic number, because the mean of its divisors is an integer number (1348863678).

Almost surely, 2^12739267815 is an apocalyptic number.

12739267815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12739267815 is a deficient number, since it is larger than the sum of its proper divisors (8842551033).

12739267815 is a wasteful number, since it uses less digits than its factorization.

12739267815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49957938.

The product of its digits is 1270080, while the sum is 51.

The spelling of 12739267815 in words is "twelve billion, seven hundred thirty-nine million, two hundred sixty-seven thousand, eight hundred fifteen".