256724043274044 has 72 divisors (see below), whose sum is σ = 650138199197760. Its totient is φ = 85416971520000.

The previous prime is 256724043274043. The next prime is 256724043274079. The reversal of 256724043274044 is 440472340427652.

256724043274044 is a `hidden beast` number, since 2 + 5 + 67 + 2 + 40 + 432 + 74 + 0 + 44 = 666.

It is a super-2 number, since 2×256724043274044² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256724043274043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49270669 + ... + 54231419.

It is an arithmetic number, because the mean of its divisors is an integer number (9029697211080).

Almost surely, 2^{256724043274044} is an apocalyptic number.

It is an amenable number.

256724043274044 is an abundant number, since it is smaller than the sum of its proper divisors (393414155923716).

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

256724043274044 is a wasteful number, since it uses less digits than its factorization.

256724043274044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963411 (or 4963406 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 54.

The spelling of 256724043274044 in words is "two hundred fifty-six trillion, seven hundred twenty-four billion, forty-three million, two hundred seventy-four thousand, forty-four".