256271072473 has 8 divisors (see below), whose sum is σ = 292218598728. Its totient is φ = 222642741504.

The previous prime is 256271072471. The next prime is 256271072479. The reversal of 256271072473 is 374270172652.

It can be written as a sum of positive squares in 4 ways, for example, as 49962531529 + 206308540944 = 223523^2 + 454212^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256271072473 - 2¹ = 256271072471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256271072471) 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 7 ways as a sum of consecutive naturals, for example, 579798586 + ... + 579799027.

It is an arithmetic number, because the mean of its divisors is an integer number (36527324841).

Almost surely, 2^256271072473 is an apocalyptic number.

It is an amenable number.

256271072473 is a deficient number, since it is larger than the sum of its proper divisors (35947526255).

256271072473 is a wasteful number, since it uses less digits than its factorization.

256271072473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159597643.

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 256271072473 in words is "two hundred fifty-six billion, two hundred seventy-one million, seventy-two thousand, four hundred seventy-three".