256410357223 has 4 divisors (see below), whose sum is σ = 267558633648. Its totient is φ = 245262080800.

The previous prime is 256410357211. The next prime is 256410357227. The reversal of 256410357223 is 322753014652.

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 256410357223 - 2⁹ = 256410356711 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256410357227) 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, 5574138178 + ... + 5574138223.

It is an arithmetic number, because the mean of its divisors is an integer number (66889658412).

Almost surely, 2^256410357223 is an apocalyptic number.

256410357223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

256410357223 is a deficient number, since it is larger than the sum of its proper divisors (11148276425).

256410357223 is a wasteful number, since it uses less digits than its factorization.

256410357223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11148276424.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 256410357223 in words is "two hundred fifty-six billion, four hundred ten million, three hundred fifty-seven thousand, two hundred twenty-three".