256759793843 has 16 divisors (see below), whose sum is σ = 298677921024. Its totient is φ = 216170143200.

The previous prime is 256759793809. The next prime is 256759793861. The reversal of 256759793843 is 348397957652.

It is a cyclic number.

It is not a de Polignac number, because 256759793843 - 2¹⁶ = 256759728307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256759793243) 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, 626108 + ... + 951593.

It is an arithmetic number, because the mean of its divisors is an integer number (18667370064).

Almost surely, 2^256759793843 is an apocalyptic number.

256759793843 is a deficient number, since it is larger than the sum of its proper divisors (41918127181).

256759793843 is a wasteful number, since it uses less digits than its factorization.

256759793843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578122.

The product of its digits is 342921600, while the sum is 68.

The spelling of 256759793843 in words is "two hundred fifty-six billion, seven hundred fifty-nine million, seven hundred ninety-three thousand, eight hundred forty-three".