10859856257 has 4 divisors (see below), whose sum is σ = 10971813636. Its totient is φ = 10747898880.

The previous prime is 10859856253. The next prime is 10859856311. The reversal of 10859856257 is 75265895801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7409938561 + 3449917696 = 86081^2 + 58736^2 .

It is a cyclic number.

It is not a de Polignac number, because 10859856257 - 2² = 10859856253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10859856253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55978544 + ... + 55978737.

It is an arithmetic number, because the mean of its divisors is an integer number (2742953409).

Almost surely, 2^10859856257 is an apocalyptic number.

It is an amenable number.

10859856257 is a deficient number, since it is larger than the sum of its proper divisors (111957379).

10859856257 is an equidigital number, since it uses as much as digits as its factorization.

10859856257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111957378.

The product of its (nonzero) digits is 6048000, while the sum is 56.

The spelling of 10859856257 in words is "ten billion, eight hundred fifty-nine million, eight hundred fifty-six thousand, two hundred fifty-seven".