256446534166 has 8 divisors (see below), whose sum is σ = 386320745304. Its totient is φ = 127672952400.

The previous prime is 256446534079. The next prime is 256446534181. The reversal of 256446534166 is 661435644652.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275156760 + ... + 275157691.

It is an arithmetic number, because the mean of its divisors is an integer number (48290093163).

Almost surely, 2^256446534166 is an apocalyptic number.

256446534166 is a deficient number, since it is larger than the sum of its proper divisors (129874211138).

256446534166 is a wasteful number, since it uses less digits than its factorization.

256446534166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550314686.

The product of its digits is 12441600, while the sum is 52.

The spelling of 256446534166 in words is "two hundred fifty-six billion, four hundred forty-six million, five hundred thirty-four thousand, one hundred sixty-six".