256800011 has 8 divisors (see below), whose sum is σ = 292821984. Its totient is φ = 223102080.

The previous prime is 256799993. The next prime is 256800013. The reversal of 256800011 is 110008652.

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 256800011 - 2¹⁴ = 256783627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256800011.

It is not an unprimeable number, because it can be changed into a prime (256800013) 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, 580775 + ... + 581216.

It is an arithmetic number, because the mean of its divisors is an integer number (36602748).

Almost surely, 2^256800011 is an apocalyptic number.

256800011 is a deficient number, since it is larger than the sum of its proper divisors (36021973).

256800011 is a wasteful number, since it uses less digits than its factorization.

256800011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162021.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 256800011 is about 16024.9808424222. The cubic root of 256800011 is about 635.6211591854.

Adding to 256800011 its reverse (110008652), we get a palindrome (366808663).

The spelling of 256800011 in words is "two hundred fifty-six million, eight hundred thousand, eleven".