256743663224451 has 16 divisors (see below), whose sum is σ = 370587712051200. Its totient is φ = 157168895726880.

The previous prime is 256743663224441. The next prime is 256743663224483. The reversal of 256743663224451 is 154422366347652.

It is not a de Polignac number, because 256743663224451 - 2¹⁵ = 256743663191683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256743663224441) 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, 17233424101 + ... + 17233438998.

It is an arithmetic number, because the mean of its divisors is an integer number (23161732003200).

Almost surely, 2^{256743663224451} is an apocalyptic number.

256743663224451 is a deficient number, since it is larger than the sum of its proper divisors (113844048826749).

256743663224451 is a wasteful number, since it uses less digits than its factorization.

256743663224451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34466863306.

The product of its digits is 174182400, while the sum is 60.

The spelling of 256743663224451 in words is "two hundred fifty-six trillion, seven hundred forty-three billion, six hundred sixty-three million, two hundred twenty-four thousand, four hundred fifty-one".