2256326643 has 16 divisors (see below), whose sum is σ = 3120698880. Its totient is φ = 1448370336.

The previous prime is 2256326641. The next prime is 2256326671. The reversal of 2256326643 is 3466236522.

It is not a de Polignac number, because 2256326643 - 2¹ = 2256326641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2256326641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3405 + ... + 67262.

It is an arithmetic number, because the mean of its divisors is an integer number (195043680).

Almost surely, 2^2256326643 is an apocalyptic number.

2256326643 is a deficient number, since it is larger than the sum of its proper divisors (864372237).

2256326643 is a wasteful number, since it uses less digits than its factorization.

2256326643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71066.

The product of its digits is 311040, while the sum is 39.

The square root of 2256326643 is about 47500.8067615699. The cubic root of 2256326643 is about 1311.5977325751.

The spelling of 2256326643 in words is "two billion, two hundred fifty-six million, three hundred twenty-six thousand, six hundred forty-three".