12947503191 has 12 divisors (see below), whose sum is σ = 20081841912. Its totient is φ = 7398573168.

The previous prime is 12947503147. The next prime is 12947503223. The reversal of 12947503191 is 19130574921.

It is not a de Polignac number, because 12947503191 - 2¹⁹ = 12946978903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12947503111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44038980 + ... + 44039273.

It is an arithmetic number, because the mean of its divisors is an integer number (1673486826).

Almost surely, 2^12947503191 is an apocalyptic number.

12947503191 is a deficient number, since it is larger than the sum of its proper divisors (7134338721).

12947503191 is an equidigital number, since it uses as much as digits as its factorization.

12947503191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88078270 (or 88078263 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 12947503191 in words is "twelve billion, nine hundred forty-seven million, five hundred three thousand, one hundred ninety-one".