12557230057 has 8 divisors (see below), whose sum is σ = 13235338440. Its totient is φ = 11895461760.

The previous prime is 12557230051. The next prime is 12557230067. The reversal of 12557230057 is 75003275521.

It can be written as a sum of positive squares in 4 ways, for example, as 7357522176 + 5199707881 = 85776^2 + 72109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12557230057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12557229998 and 12557230025.

It is not an unprimeable number, because it can be changed into a prime (12557230051) 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, 4083444 + ... + 4086517.

It is an arithmetic number, because the mean of its divisors is an integer number (1654417305).

Almost surely, 2^12557230057 is an apocalyptic number.

It is an amenable number.

12557230057 is a deficient number, since it is larger than the sum of its proper divisors (678108383).

12557230057 is an equidigital number, since it uses as much as digits as its factorization.

12557230057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8170043.

The product of its (nonzero) digits is 73500, while the sum is 37.

The spelling of 12557230057 in words is "twelve billion, five hundred fifty-seven million, two hundred thirty thousand, fifty-seven".