12571815601 has 2 divisors, whose sum is σ = 12571815602. Its totient is φ = 12571815600.

The previous prime is 12571815593. The next prime is 12571815629. The reversal of 12571815601 is 10651817521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11176718400 + 1395097201 = 105720^2 + 37351^2 .

It is a cyclic number.

It is not a de Polignac number, because 12571815601 - 2³ = 12571815593 is a prime.

It is not a weakly prime, because it can be changed into another prime (12571815661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6285907800 + 6285907801.

It is an arithmetic number, because the mean of its divisors is an integer number (6285907801).

Almost surely, 2^12571815601 is an apocalyptic number.

It is an amenable number.

12571815601 is a deficient number, since it is larger than the sum of its proper divisors (1).

12571815601 is an equidigital number, since it uses as much as digits as its factorization.

12571815601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 37.

The spelling of 12571815601 in words is "twelve billion, five hundred seventy-one million, eight hundred fifteen thousand, six hundred one".