256550675175166 has 16 divisors (see below), whose sum is σ = 386842710048768. Its totient is φ = 127603111761400.

The previous prime is 256550675175149. The next prime is 256550675175173. The reversal of 256550675175166 is 661571576055652.

It is a super-2 number, since 2×256550675175166² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 81666771 + ... + 84750001.

It is an arithmetic number, because the mean of its divisors is an integer number (24177669378048).

Almost surely, 2^{256550675175166} is an apocalyptic number.

256550675175166 is a deficient number, since it is larger than the sum of its proper divisors (130292034873602).

256550675175166 is a wasteful number, since it uses less digits than its factorization.

256550675175166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301247.

The product of its (nonzero) digits is 396900000, while the sum is 67.

The spelling of 256550675175166 in words is "two hundred fifty-six trillion, five hundred fifty billion, six hundred seventy-five million, one hundred seventy-five thousand, one hundred sixty-six".