12557522534 has 16 divisors (see below), whose sum is σ = 19013593968. Its totient is φ = 6219720192.

The previous prime is 12557522521. The next prime is 12557522569. The reversal of 12557522534 is 43522575521.

It is a junction number, because it is equal to n+sod(n) for n = 12557522491 and 12557522500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416414 + ... + 445550.

It is an arithmetic number, because the mean of its divisors is an integer number (1188349623).

Almost surely, 2^12557522534 is an apocalyptic number.

12557522534 is a deficient number, since it is larger than the sum of its proper divisors (6456071434).

12557522534 is a wasteful number, since it uses less digits than its factorization.

12557522534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31159.

The product of its digits is 420000, while the sum is 41.

The spelling of 12557522534 in words is "twelve billion, five hundred fifty-seven million, five hundred twenty-two thousand, five hundred thirty-four".