12134990557 has 2 divisors, whose sum is σ = 12134990558. Its totient is φ = 12134990556.

The previous prime is 12134990537. The next prime is 12134990563. The reversal of 12134990557 is 75509943121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12034309401 + 100681156 = 109701^2 + 10034^2 .

It is a cyclic number.

It is not a de Polignac number, because 12134990557 - 2¹⁵ = 12134957789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12134990537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067495278 + 6067495279.

It is an arithmetic number, because the mean of its divisors is an integer number (6067495279).

Almost surely, 2^12134990557 is an apocalyptic number.

It is an amenable number.

12134990557 is a deficient number, since it is larger than the sum of its proper divisors (1).

12134990557 is an equidigital number, since it uses as much as digits as its factorization.

12134990557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 12134990557 in words is "twelve billion, one hundred thirty-four million, nine hundred ninety thousand, five hundred fifty-seven".