256744347666112 has 28 divisors (see below), whose sum is σ = 509477695851816. Its totient is φ = 128372014853120.

The previous prime is 256744347666089. The next prime is 256744347666167. The reversal of 256744347666112 is 211666743447652.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 62966088 + ... + 66919480.

Almost surely, 2^{256744347666112} is an apocalyptic number.

It is an amenable number.

256744347666112 is a deficient number, since it is larger than the sum of its proper divisors (252733348185704).

256744347666112 is a wasteful number, since it uses less digits than its factorization.

256744347666112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968136 (or 4968126 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 64.

The spelling of 256744347666112 in words is "two hundred fifty-six trillion, seven hundred forty-four billion, three hundred forty-seven million, six hundred sixty-six thousand, one hundred twelve".