256622372020266 has 16 divisors (see below), whose sum is σ = 586565421760704. Its totient is φ = 73320677720064.

The previous prime is 256622372020153. The next prime is 256622372020283. The reversal of 256622372020266 is 662020273226652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3055028238295 + ... + 3055028238378.

It is an arithmetic number, because the mean of its divisors is an integer number (36660338860044).

Almost surely, 2^{256622372020266} is an apocalyptic number.

256622372020266 is an abundant number, since it is smaller than the sum of its proper divisors (329943049740438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256622372020266 is a wasteful number, since it uses less digits than its factorization.

256622372020266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110056476685.

The product of its (nonzero) digits is 8709120, while the sum is 51.

The spelling of 256622372020266 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred seventy-two million, twenty thousand, two hundred sixty-six".