12739559387 has 4 divisors (see below), whose sum is σ = 12796687680. Its totient is φ = 12682431096.

The previous prime is 12739559383. The next prime is 12739559411. The reversal of 12739559387 is 78395593721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12739559387 - 2² = 12739559383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12739559383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28563812 + ... + 28564257.

It is an arithmetic number, because the mean of its divisors is an integer number (3199171920).

Almost surely, 2^12739559387 is an apocalyptic number.

12739559387 is a deficient number, since it is larger than the sum of its proper divisors (57128293).

12739559387 is an equidigital number, since it uses as much as digits as its factorization.

12739559387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57128292.

The product of its digits is 14288400, while the sum is 59.

The spelling of 12739559387 in words is "twelve billion, seven hundred thirty-nine million, five hundred fifty-nine thousand, three hundred eighty-seven".