256502147726426 has 16 divisors (see below), whose sum is σ = 445911178343040. Its totient is φ = 108381189179760.

The previous prime is 256502147726417. The next prime is 256502147726443. The reversal of 256502147726426 is 624627741205652.

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, 129025224221 + ... + 129025226208.

It is an arithmetic number, because the mean of its divisors is an integer number (27869448646440).

Almost surely, 2^{256502147726426} is an apocalyptic number.

256502147726426 is a deficient number, since it is larger than the sum of its proper divisors (189409030616614).

256502147726426 is a wasteful number, since it uses less digits than its factorization.

256502147726426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258050450509.

The product of its (nonzero) digits is 67737600, while the sum is 59.

The spelling of 256502147726426 in words is "two hundred fifty-six trillion, five hundred two billion, one hundred forty-seven million, seven hundred twenty-six thousand, four hundred twenty-six".