10981826857 has 8 divisors (see below), whose sum is σ = 11107669320. Its totient is φ = 10856039040.

The previous prime is 10981826839. The next prime is 10981826897. The reversal of 10981826857 is 75862818901.

It can be written as a sum of positive squares in 4 ways, for example, as 2768896 + 10979057961 = 1664^2 + 104781^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10981826857 is a prime.

It is a super-2 number, since 2×10981826857² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10981826798 and 10981826807.

It is not an unprimeable number, because it can be changed into a prime (10981826837) 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, 500203 + ... + 521695.

It is an arithmetic number, because the mean of its divisors is an integer number (1388458665).

Almost surely, 2^10981826857 is an apocalyptic number.

It is an amenable number.

10981826857 is a deficient number, since it is larger than the sum of its proper divisors (125842463).

10981826857 is an equidigital number, since it uses as much as digits as its factorization.

10981826857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27323.

The product of its (nonzero) digits is 1935360, while the sum is 55.

The spelling of 10981826857 in words is "ten billion, nine hundred eighty-one million, eight hundred twenty-six thousand, eight hundred fifty-seven".