2297895256021 has 4 divisors (see below), whose sum is σ = 2377133023500. Its totient is φ = 2218657488544.

The previous prime is 2297895255961. The next prime is 2297895256057. The reversal of 2297895256021 is 1206525987922.

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 1705534133521 + 592361122500 = 1305961^2 + 769650^2 .

It is a cyclic number.

It is not a de Polignac number, because 2297895256021 - 2⁷ = 2297895255893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2297895256121) 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, 39618883696 + ... + 39618883753.

It is an arithmetic number, because the mean of its divisors is an integer number (594283255875).

Almost surely, 2^{2297895256021} is an apocalyptic number.

It is an amenable number.

2297895256021 is a deficient number, since it is larger than the sum of its proper divisors (79237767479).

2297895256021 is an equidigital number, since it uses as much as digits as its factorization.

2297895256021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79237767478.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 2297895256021 in words is "two trillion, two hundred ninety-seven billion, eight hundred ninety-five million, two hundred fifty-six thousand, twenty-one".