256163960935 has 4 divisors (see below), whose sum is σ = 307396753128. Its totient is φ = 204931168744.

The previous prime is 256163960929. The next prime is 256163960939. The reversal of 256163960935 is 539069361652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256163960935 - 2⁷ = 256163960807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256163960939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25616396089 + ... + 25616396098.

It is an arithmetic number, because the mean of its divisors is an integer number (76849188282).

Almost surely, 2^256163960935 is an apocalyptic number.

256163960935 is a deficient number, since it is larger than the sum of its proper divisors (51232792193).

256163960935 is an equidigital number, since it uses as much as digits as its factorization.

256163960935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51232792192.

The product of its (nonzero) digits is 7873200, while the sum is 55.

The spelling of 256163960935 in words is "two hundred fifty-six billion, one hundred sixty-three million, nine hundred sixty thousand, nine hundred thirty-five".