10783857857 has 4 divisors (see below), whose sum is σ = 10784118996. Its totient is φ = 10783596720.

The previous prime is 10783857839. The next prime is 10783857859. The reversal of 10783857857 is 75875838701.

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 5194949776 + 5588908081 = 72076^2 + 74759^2 .

It is a cyclic number.

It is not a de Polignac number, because 10783857857 - 2²⁰ = 10782809281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10783857796 and 10783857805.

It is not an unprimeable number, because it can be changed into a prime (10783857859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53438 + ... + 156279.

It is an arithmetic number, because the mean of its divisors is an integer number (2696029749).

Almost surely, 2^10783857857 is an apocalyptic number.

It is an amenable number.

10783857857 is a deficient number, since it is larger than the sum of its proper divisors (261139).

10783857857 is an equidigital number, since it uses as much as digits as its factorization.

10783857857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261138.

The product of its (nonzero) digits is 13171200, while the sum is 59.

The spelling of 10783857857 in words is "ten billion, seven hundred eighty-three million, eight hundred fifty-seven thousand, eight hundred fifty-seven".