10109235865 has 4 divisors (see below), whose sum is σ = 12131083044. Its totient is φ = 8087388688.

The previous prime is 10109235767. The next prime is 10109235881. The reversal of 10109235865 is 56853290101.

10109235865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1221083136 + 8888152729 = 34944^2 + 94277^2 .

It is a cyclic number.

It is not a de Polignac number, because 10109235865 - 2²³ = 10100847257 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 3 ways as a sum of consecutive naturals, for example, 1010923582 + ... + 1010923591.

It is an arithmetic number, because the mean of its divisors is an integer number (3032770761).

Almost surely, 2^10109235865 is an apocalyptic number.

It is an amenable number.

10109235865 is a deficient number, since it is larger than the sum of its proper divisors (2021847179).

10109235865 is an equidigital number, since it uses as much as digits as its factorization.

10109235865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021847178.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 10109235865 in words is "ten billion, one hundred nine million, two hundred thirty-five thousand, eight hundred sixty-five".