256789844402 has 16 divisors (see below), whose sum is σ = 474073559232. Its totient is φ = 101587191120.

The previous prime is 256789844327. The next prime is 256789844419. The reversal of 256789844402 is 204448987652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705466424 + ... + 705466787.

It is an arithmetic number, because the mean of its divisors is an integer number (29629597452).

Almost surely, 2^256789844402 is an apocalyptic number.

256789844402 is a deficient number, since it is larger than the sum of its proper divisors (217283714830).

256789844402 is a wasteful number, since it uses less digits than its factorization.

256789844402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410933233.

The product of its (nonzero) digits is 30965760, while the sum is 59.

The spelling of 256789844402 in words is "two hundred fifty-six billion, seven hundred eighty-nine million, eight hundred forty-four thousand, four hundred two".