256533434682 has 24 divisors (see below), whose sum is σ = 596832889536. Its totient is φ = 73295266968.

The previous prime is 256533434671. The next prime is 256533434687. The reversal of 256533434682 is 286434335652.

It is a super-2 number, since 2×256533434682² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256533434687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436281058 + ... + 436281645.

It is an arithmetic number, because the mean of its divisors is an integer number (24868037064).

Almost surely, 2^256533434682 is an apocalyptic number.

256533434682 is an abundant number, since it is smaller than the sum of its proper divisors (340299454854).

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

256533434682 is a wasteful number, since it uses less digits than its factorization.

256533434682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872562722 (or 872562715 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 51.

The spelling of 256533434682 in words is "two hundred fifty-six billion, five hundred thirty-three million, four hundred thirty-four thousand, six hundred eighty-two".