109856680259 has 4 divisors (see below), whose sum is σ = 109949231304. Its totient is φ = 109764129216.

The previous prime is 109856680253. The next prime is 109856680261. The reversal of 109856680259 is 952086658901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109856680259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109856680198 and 109856680207.

It is not an unprimeable number, because it can be changed into a prime (109856680253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46273742 + ... + 46276115.

It is an arithmetic number, because the mean of its divisors is an integer number (27487307826).

Almost surely, 2^109856680259 is an apocalyptic number.

109856680259 is a deficient number, since it is larger than the sum of its proper divisors (92551045).

109856680259 is an equidigital number, since it uses as much as digits as its factorization.

109856680259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92551044.

The product of its (nonzero) digits is 9331200, while the sum is 59.

The spelling of 109856680259 in words is "one hundred nine billion, eight hundred fifty-six million, six hundred eighty thousand, two hundred fifty-nine".