12957398523 has 20 divisors (see below), whose sum is σ = 19360779240. Its totient is φ = 8636183712.

The previous prime is 12957398491. The next prime is 12957398533. The reversal of 12957398523 is 32589375921.

12957398523 is a `hidden beast` number, since 1 + 29 + 5 + 7 + 3 + 98 + 523 = 666.

12957398523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12957398523 - 2⁵ = 12957398491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12957398523.

It is not an unprimeable number, because it can be changed into a prime (12957398533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 366136 + ... + 399962.

It is an arithmetic number, because the mean of its divisors is an integer number (968038962).

Almost surely, 2^12957398523 is an apocalyptic number.

12957398523 is a deficient number, since it is larger than the sum of its proper divisors (6403380717).

12957398523 is an equidigital number, since it uses as much as digits as its factorization.

12957398523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38568 (or 38559 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 12957398523 in words is "twelve billion, nine hundred fifty-seven million, three hundred ninety-eight thousand, five hundred twenty-three".