256600618386 has 24 divisors (see below), whose sum is σ = 596989194480. Its totient is φ = 73314462312.

The previous prime is 256600618381. The next prime is 256600618397. The reversal of 256600618386 is 683816006652.

It is not an unprimeable number, because it can be changed into a prime (256600618381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436395316 + ... + 436395903.

It is an arithmetic number, because the mean of its divisors is an integer number (24874549770).

Almost surely, 2^256600618386 is an apocalyptic number.

256600618386 is an abundant number, since it is smaller than the sum of its proper divisors (340388576094).

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

256600618386 is a wasteful number, since it uses less digits than its factorization.

256600618386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872791238 (or 872791231 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 256600618386 in words is "two hundred fifty-six billion, six hundred million, six hundred eighteen thousand, three hundred eighty-six".