12947866930213 has 24 divisors (see below), whose sum is σ = 13939951325832. Its totient is φ = 12022542188544.

The previous prime is 12947866930181. The next prime is 12947866930223. The reversal of 12947866930213 is 31203966874921.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 1262011832449 + 11685855097764 = 1123393^2 + 3418458^2 .

It is not a de Polignac number, because 12947866930213 - 2⁵ = 12947866930181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12947866930223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8157945 + ... + 9614977.

It is an arithmetic number, because the mean of its divisors is an integer number (580831305243).

Almost surely, 2^{12947866930213} is an apocalyptic number.

It is an amenable number.

12947866930213 is a deficient number, since it is larger than the sum of its proper divisors (992084395619).

12947866930213 is a wasteful number, since it uses less digits than its factorization.

12947866930213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457481 (or 1457464 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 61.

The spelling of 12947866930213 in words is "twelve trillion, nine hundred forty-seven billion, eight hundred sixty-six million, nine hundred thirty thousand, two hundred thirteen".