12231157257 has 24 divisors (see below), whose sum is σ = 19283273568. Its totient is φ = 7409001600.

The previous prime is 12231157219. The next prime is 12231157259. The reversal of 12231157257 is 75275113221.

12231157257 is a `hidden beast` number, since 1 + 2 + 2 + 31 + 1 + 572 + 57 = 666.

It is not a de Polignac number, because 12231157257 - 2⁷ = 12231157129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12231157259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167457 + ... + 229137.

It is an arithmetic number, because the mean of its divisors is an integer number (803469732).

Almost surely, 2^12231157257 is an apocalyptic number.

It is an amenable number.

12231157257 is a deficient number, since it is larger than the sum of its proper divisors (7052116311).

12231157257 is a wasteful number, since it uses less digits than its factorization.

12231157257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63701 (or 63698 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The spelling of 12231157257 in words is "twelve billion, two hundred thirty-one million, one hundred fifty-seven thousand, two hundred fifty-seven".