2656022641 has 4 divisors (see below), whose sum is σ = 2656521072. Its totient is φ = 2655524212.

The previous prime is 2656022627. The next prime is 2656022651. The reversal of 2656022641 is 1462206562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2656022641 - 2¹⁷ = 2655891569 is a prime.

It is a super-2 number, since 2×2656022641² = 14108912539009229762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2656022597 and 2656022606.

It is not an unprimeable number, because it can be changed into a prime (2656022651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241135 + ... + 251908.

It is an arithmetic number, because the mean of its divisors is an integer number (664130268).

Almost surely, 2^2656022641 is an apocalyptic number.

It is an amenable number.

2656022641 is a deficient number, since it is larger than the sum of its proper divisors (498431).

2656022641 is an equidigital number, since it uses as much as digits as its factorization.

2656022641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498430.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 2656022641 is about 51536.6145667330. The cubic root of 2656022641 is about 1384.8750496130.

The spelling of 2656022641 in words is "two billion, six hundred fifty-six million, twenty-two thousand, six hundred forty-one".