10645866985 has 16 divisors (see below), whose sum is σ = 13761501264. Its totient is φ = 7859411712.

The previous prime is 10645866977. The next prime is 10645866997. The reversal of 10645866985 is 58966854601.

10645866985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 915425536 + 9730441449 = 30256^2 + 98643^2 .

It is a cyclic number.

It is not a de Polignac number, because 10645866985 - 2³ = 10645866977 is a prime.

It is a super-2 number, since 2×10645866985² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240439 + ... + 281251.

It is an arithmetic number, because the mean of its divisors is an integer number (860093829).

Almost surely, 2^10645866985 is an apocalyptic number.

It is an amenable number.

10645866985 is a deficient number, since it is larger than the sum of its proper divisors (3115634279).

10645866985 is a wasteful number, since it uses less digits than its factorization.

10645866985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44844.

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 10645866985 in words is "ten billion, six hundred forty-five million, eight hundred sixty-six thousand, nine hundred eighty-five".