256623203265211 has 8 divisors (see below), whose sum is σ = 257843463955280. Its totient is φ = 255405492755712.

The previous prime is 256623203265193. The next prime is 256623203265223. The reversal of 256623203265211 is 112562302326652.

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 256623203265211 - 2¹³ = 256623203257019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256623203265241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637343406 + ... + 637745923.

It is an arithmetic number, because the mean of its divisors is an integer number (32230432994410).

Almost surely, 2^{256623203265211} is an apocalyptic number.

256623203265211 is a deficient number, since it is larger than the sum of its proper divisors (1220260690069).

256623203265211 is a wasteful number, since it uses less digits than its factorization.

256623203265211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275090285.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 256623203265211 in words is "two hundred fifty-six trillion, six hundred twenty-three billion, two hundred three million, two hundred sixty-five thousand, two hundred eleven".