256410310513 has 8 divisors (see below), whose sum is σ = 293068830080. Its totient is φ = 219758909760.

The previous prime is 256410310489. The next prime is 256410310529. The reversal of 256410310513 is 315013014652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256410310513 - 2⁹ = 256410310001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256410310543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702293 + ... + 1846786.

It is an arithmetic number, because the mean of its divisors is an integer number (36633603760).

Almost surely, 2^256410310513 is an apocalyptic number.

It is an amenable number.

256410310513 is a deficient number, since it is larger than the sum of its proper divisors (36658519567).

256410310513 is a wasteful number, since it uses less digits than its factorization.

256410310513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559407.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 256410310513 in words is "two hundred fifty-six billion, four hundred ten million, three hundred ten thousand, five hundred thirteen".