12857637601 has 4 divisors (see below), whose sum is σ = 12863800512. Its totient is φ = 12851474692.

The previous prime is 12857637589. The next prime is 12857637623. The reversal of 12857637601 is 10673675821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12857637601 - 2⁷ = 12857637473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12857637631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3078325 + ... + 3082498.

It is an arithmetic number, because the mean of its divisors is an integer number (3215950128).

Almost surely, 2^12857637601 is an apocalyptic number.

It is an amenable number.

12857637601 is a deficient number, since it is larger than the sum of its proper divisors (6162911).

12857637601 is an equidigital number, since it uses as much as digits as its factorization.

12857637601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162910.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 12857637601 in words is "twelve billion, eight hundred fifty-seven million, six hundred thirty-seven thousand, six hundred one".