256436042112 has 48 divisors (see below), whose sum is σ = 737921426580. Its totient is φ = 85478680320.

The previous prime is 256436042077. The next prime is 256436042129. The reversal of 256436042112 is 211240634652.

256436042112 is a `hidden beast` number, since 2 + 5 + 6 + 43 + 604 + 2 + 1 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111299214 + ... + 111301517.

Almost surely, 2^256436042112 is an apocalyptic number.

It is an amenable number.

256436042112 is an abundant number, since it is smaller than the sum of its proper divisors (481485384468).

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

256436042112 is a wasteful number, since it uses less digits than its factorization.

256436042112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222600751 (or 222600736 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 256436042112 its reverse (211240634652), we get a palindrome (467676676764).

The spelling of 256436042112 in words is "two hundred fifty-six billion, four hundred thirty-six million, forty-two thousand, one hundred twelve".