256023872823811 has 8 divisors (see below), whose sum is σ = 256442379476544. Its totient is φ = 255605368939200.

The previous prime is 256023872823809. The next prime is 256023872823847. The reversal of 256023872823811 is 118328278320652.

It is a happy number.

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 256023872823811 - 2¹ = 256023872823809 is a prime.

It is a super-2 number, since 2×256023872823811² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256023872823011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272375286 + ... + 273313636.

It is an arithmetic number, because the mean of its divisors is an integer number (32055297434568).

Almost surely, 2^{256023872823811} is an apocalyptic number.

256023872823811 is a deficient number, since it is larger than the sum of its proper divisors (418506652733).

256023872823811 is an equidigital number, since it uses as much as digits as its factorization.

256023872823811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384061.

The product of its (nonzero) digits is 15482880, while the sum is 58.

The spelling of 256023872823811 in words is "two hundred fifty-six trillion, twenty-three billion, eight hundred seventy-two million, eight hundred twenty-three thousand, eight hundred eleven".