256743504214263 has 48 divisors (see below), whose sum is σ = 429992992316160. Its totient is φ = 145981348502400.

The previous prime is 256743504214217. The next prime is 256743504214283. The reversal of 256743504214263 is 362412405347652.

256743504214263 is a `hidden beast` number, since 2 + 5 + 6 + 7 + 4 + 350 + 4 + 21 + 4 + 263 = 666.

It is not a de Polignac number, because 256743504214263 - 2¹⁶ = 256743504148727 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256743504214283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 662394078 + ... + 662781563.

It is an arithmetic number, because the mean of its divisors is an integer number (8958187339920).

Almost surely, 2^{256743504214263} is an apocalyptic number.

256743504214263 is a deficient number, since it is larger than the sum of its proper divisors (173249488101897).

256743504214263 is a wasteful number, since it uses less digits than its factorization.

256743504214263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325175780 (or 1325175777 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 54.

The spelling of 256743504214263 in words is "two hundred fifty-six trillion, seven hundred forty-three billion, five hundred four million, two hundred fourteen thousand, two hundred sixty-three".