256374207066 has 32 divisors (see below), whose sum is σ = 524716093440. Its totient is φ = 83463783984.

The previous prime is 256374207029. The next prime is 256374207077. The reversal of 256374207066 is 660702473652.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3780405 + ... + 3847623.

It is an arithmetic number, because the mean of its divisors is an integer number (16397377920).

Almost surely, 2^256374207066 is an apocalyptic number.

256374207066 is an abundant number, since it is smaller than the sum of its proper divisors (268341886374).

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

256374207066 is a wasteful number, since it uses less digits than its factorization.

256374207066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82050.

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 256374207066 in words is "two hundred fifty-six billion, three hundred seventy-four million, two hundred seven thousand, sixty-six".