3256643351 has 6 divisors (see below), whose sum is σ = 3526424640. Its totient is φ = 3006132168.

The previous prime is 3256643323. The next prime is 3256643477. The reversal of 3256643351 is 1533466523.

3256643351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3256643351 - 2⁶ = 3256643287 is a prime.

It is a super-2 number, since 2×3256643351² = 21211451831225018402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3256643311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9634871 + ... + 9635208.

It is an arithmetic number, because the mean of its divisors is an integer number (587737440).

Almost surely, 2^3256643351 is an apocalyptic number.

3256643351 is a deficient number, since it is larger than the sum of its proper divisors (269781289).

3256643351 is a wasteful number, since it uses less digits than its factorization.

3256643351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19270105 (or 19270092 counting only the distinct ones).

The product of its digits is 194400, while the sum is 38.

The square root of 3256643351 is about 57067.0075525255. The cubic root of 3256643351 is about 1482.2566242788.

The spelling of 3256643351 in words is "three billion, two hundred fifty-six million, six hundred forty-three thousand, three hundred fifty-one".