2256323650421 has 8 divisors (see below), whose sum is σ = 2389391901144. Its totient is φ = 2123293547520.

The previous prime is 2256323650379. The next prime is 2256323650433. The reversal of 2256323650421 is 1240563236522.

It can be written as a sum of positive squares in 4 ways, for example, as 732367966225 + 1523955684196 = 855785^2 + 1234486^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2256323650421 - 2¹⁰ = 2256323649397 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 (2256323650121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9415130 + ... + 9651803.

It is an arithmetic number, because the mean of its divisors is an integer number (298673987643).

Almost surely, 2^{2256323650421} is an apocalyptic number.

It is an amenable number.

2256323650421 is a deficient number, since it is larger than the sum of its proper divisors (133068250723).

2256323650421 is a wasteful number, since it uses less digits than its factorization.

2256323650421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19073911.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 2256323650421 its reverse (1240563236522), we get a palindrome (3496886886943).

The spelling of 2256323650421 in words is "two trillion, two hundred fifty-six billion, three hundred twenty-three million, six hundred fifty thousand, four hundred twenty-one".