2256123828601 has 4 divisors (see below), whose sum is σ = 2256334122100. Its totient is φ = 2255913535104.

The previous prime is 2256123828599. The next prime is 2256123828617. The reversal of 2256123828601 is 1068283216522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2048963216400 + 207160612201 = 1431420^2 + 455149^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256123828601 - 2¹ = 2256123828599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256123828631) 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, 105130656 + ... + 105152113.

It is an arithmetic number, because the mean of its divisors is an integer number (564083530525).

Almost surely, 2^{2256123828601} is an apocalyptic number.

It is an amenable number.

2256123828601 is a deficient number, since it is larger than the sum of its proper divisors (210293499).

2256123828601 is a wasteful number, since it uses less digits than its factorization.

2256123828601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210293498.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 2256123828601 in words is "two trillion, two hundred fifty-six billion, one hundred twenty-three million, eight hundred twenty-eight thousand, six hundred one".