10109566989 has 40 divisors (see below), whose sum is σ = 15270563000. Its totient is φ = 6664716288.

The previous prime is 10109566981. The next prime is 10109567033. The reversal of 10109566989 is 98966590101.

It can be written as a sum of positive squares in 4 ways, for example, as 809857764 + 9299709225 = 28458^2 + 96435^2 .

It is not a de Polignac number, because 10109566989 - 2³ = 10109566981 is a prime.

It is a super-2 number, since 2×10109566989² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10109566981) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6788757 + ... + 6790245.

It is an arithmetic number, because the mean of its divisors is an integer number (381764075).

Almost surely, 2^10109566989 is an apocalyptic number.

It is an amenable number.

10109566989 is a deficient number, since it is larger than the sum of its proper divisors (5160996011).

10109566989 is a wasteful number, since it uses less digits than its factorization.

10109566989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379 (or 2370 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The spelling of 10109566989 in words is "ten billion, one hundred nine million, five hundred sixty-six thousand, nine hundred eighty-nine".