256613032702673 has 4 divisors (see below), whose sum is σ = 260443077966960. Its totient is φ = 252782987438388.

The previous prime is 256613032702643. The next prime is 256613032702679. The reversal of 256613032702673 is 376207230316652.

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 256613032702673 - 2⁸ = 256613032702417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256613032702679) 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, 1915022632043 + ... + 1915022632176.

It is an arithmetic number, because the mean of its divisors is an integer number (65110769491740).

Almost surely, 2^{256613032702673} is an apocalyptic number.

It is an amenable number.

256613032702673 is a deficient number, since it is larger than the sum of its proper divisors (3830045264287).

256613032702673 is an equidigital number, since it uses as much as digits as its factorization.

256613032702673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830045264286.

The product of its (nonzero) digits is 11430720, while the sum is 53.

The spelling of 256613032702673 in words is "two hundred fifty-six trillion, six hundred thirteen billion, thirty-two million, seven hundred two thousand, six hundred seventy-three".