256077441013 has 4 divisors (see below), whose sum is σ = 256155731488. Its totient is φ = 255999150540.

The previous prime is 256077440987. The next prime is 256077441047. The reversal of 256077441013 is 310144770652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256077441013 - 2²⁹ = 255540570101 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 (256077441413) 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, 39140331 + ... + 39146872.

It is an arithmetic number, because the mean of its divisors is an integer number (64038932872).

Almost surely, 2^256077441013 is an apocalyptic number.

It is an amenable number.

256077441013 is a deficient number, since it is larger than the sum of its proper divisors (78290475).

256077441013 is an equidigital number, since it uses as much as digits as its factorization.

256077441013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78290474.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 256077441013 in words is "two hundred fifty-six billion, seventy-seven million, four hundred forty-one thousand, thirteen".