2656274321 has 2 divisors, whose sum is σ = 2656274322. Its totient is φ = 2656274320.

The previous prime is 2656274311. The next prime is 2656274333. The reversal of 2656274321 is 1234726562.

2656274321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2629638400 + 26635921 = 51280^2 + 5161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2656274321 is a prime.

It is a super-2 number, since 2×2656274321² = 14111586536808022082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2656274311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328137160 + 1328137161.

It is an arithmetic number, because the mean of its divisors is an integer number (1328137161).

Almost surely, 2^2656274321 is an apocalyptic number.

It is an amenable number.

2656274321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656274321 is an equidigital number, since it uses as much as digits as its factorization.

2656274321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 2656274321 is about 51539.0562680381. The cubic root of 2656274321 is about 1384.9187910001.

The spelling of 2656274321 in words is "two billion, six hundred fifty-six million, two hundred seventy-four thousand, three hundred twenty-one".