12712255015 has 4 divisors (see below), whose sum is σ = 15254706024. Its totient is φ = 10169804008.

The previous prime is 12712255013. The next prime is 12712255021. The reversal of 12712255015 is 51055221721.

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 12712255015 - 2¹ = 12712255013 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12712255013) 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, 1271225497 + ... + 1271225506.

It is an arithmetic number, because the mean of its divisors is an integer number (3813676506).

Almost surely, 2^12712255015 is an apocalyptic number.

12712255015 is a deficient number, since it is larger than the sum of its proper divisors (2542451009).

12712255015 is an equidigital number, since it uses as much as digits as its factorization.

12712255015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542451008.

The product of its (nonzero) digits is 7000, while the sum is 31.

Adding to 12712255015 its reverse (51055221721), we get a palindrome (63767476736).

The spelling of 12712255015 in words is "twelve billion, seven hundred twelve million, two hundred fifty-five thousand, fifteen".