12534988957 has 2 divisors, whose sum is σ = 12534988958. Its totient is φ = 12534988956.

The previous prime is 12534988951. The next prime is 12534988967. The reversal of 12534988957 is 75988943521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6511521636 + 6023467321 = 80694^2 + 77611^2 .

It is an emirp because it is prime and its reverse (75988943521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12534988957 - 2³¹ = 10387505309 is a prime.

It is a super-2 number, since 2×12534988957² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12534988895 and 12534988904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12534988951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6267494478 + 6267494479.

It is an arithmetic number, because the mean of its divisors is an integer number (6267494479).

Almost surely, 2^12534988957 is an apocalyptic number.

It is an amenable number.

12534988957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12534988957 is an equidigital number, since it uses as much as digits as its factorization.

12534988957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 61.

The spelling of 12534988957 in words is "twelve billion, five hundred thirty-four million, nine hundred eighty-eight thousand, nine hundred fifty-seven".