12557846838 has 16 divisors (see below), whose sum is σ = 25177106160. Its totient is φ = 4175713536.

The previous prime is 12557846831. The next prime is 12557846839. The reversal of 12557846838 is 83864875521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557846831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2556195 + ... + 2561102.

It is an arithmetic number, because the mean of its divisors is an integer number (1573569135).

Almost surely, 2^12557846838 is an apocalyptic number.

12557846838 is an abundant number, since it is smaller than the sum of its proper divisors (12619259322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12557846838 is a wasteful number, since it uses less digits than its factorization.

12557846838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117711.

The product of its digits is 12902400, while the sum is 57.

The spelling of 12557846838 in words is "twelve billion, five hundred fifty-seven million, eight hundred forty-six thousand, eight hundred thirty-eight".