12905992613 has 2 divisors, whose sum is σ = 12905992614. Its totient is φ = 12905992612.

The previous prime is 12905992577. The next prime is 12905992661. The reversal of 12905992613 is 31629950921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7031996449 + 5873996164 = 83857^2 + 76642^2 .

It is a cyclic number.

It is not a de Polignac number, because 12905992613 - 2¹⁰ = 12905991589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12905992313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6452996306 + 6452996307.

It is an arithmetic number, because the mean of its divisors is an integer number (6452996307).

Almost surely, 2^12905992613 is an apocalyptic number.

It is an amenable number.

12905992613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12905992613 is an equidigital number, since it uses as much as digits as its factorization.

12905992613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 47.

The spelling of 12905992613 in words is "twelve billion, nine hundred five million, nine hundred ninety-two thousand, six hundred thirteen".