2256645443266 has 8 divisors (see below), whose sum is σ = 3411621457920. Its totient is φ = 1119438290628.

The previous prime is 2256645443263. The next prime is 2256645443267. The reversal of 2256645443266 is 6623445466522.

It is a happy number.

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

It is a super-2 number, since 2×2256645443266² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2256645443263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4442215186 + ... + 4442215693.

It is an arithmetic number, because the mean of its divisors is an integer number (426452682240).

Almost surely, 2^{2256645443266} is an apocalyptic number.

2256645443266 is a deficient number, since it is larger than the sum of its proper divisors (1154976014654).

2256645443266 is a wasteful number, since it uses less digits than its factorization.

2256645443266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8884431008.

The product of its digits is 49766400, while the sum is 55.

The spelling of 2256645443266 in words is "two trillion, two hundred fifty-six billion, six hundred forty-five million, four hundred forty-three thousand, two hundred sixty-six".