256345620033 has 8 divisors (see below), whose sum is σ = 343010510496. Its totient is φ = 170288904800.

The previous prime is 256345620001. The next prime is 256345620049. The reversal of 256345620033 is 330026543652.

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 256345620033 - 2⁵ = 256345620001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256345619973 and 256345620000.

It is not an unprimeable number, because it can be changed into a prime (256345620053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152042823 + ... + 152044508.

It is an arithmetic number, because the mean of its divisors is an integer number (42876313812).

Almost surely, 2^256345620033 is an apocalyptic number.

It is an amenable number.

256345620033 is a deficient number, since it is larger than the sum of its proper divisors (86664890463).

256345620033 is a wasteful number, since it uses less digits than its factorization.

256345620033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304087615.

The product of its (nonzero) digits is 388800, while the sum is 39.

The spelling of 256345620033 in words is "two hundred fifty-six billion, three hundred forty-five million, six hundred twenty thousand, thirty-three".