109268529409 has 4 divisors (see below), whose sum is σ = 117673800916. Its totient is φ = 100863257904.

The previous prime is 109268529373. The next prime is 109268529431. The reversal of 109268529409 is 904925862901.

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 45324281025 + 63944248384 = 212895^2 + 252872^2 .

It is a cyclic number.

It is not a de Polignac number, because 109268529409 - 2³¹ = 107121045761 is a prime.

It is a super-2 number, since 2×109268529409² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109268529409.

It is not an unprimeable number, because it can be changed into a prime (109268529449) 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, 4202635734 + ... + 4202635759.

It is an arithmetic number, because the mean of its divisors is an integer number (29418450229).

Almost surely, 2^109268529409 is an apocalyptic number.

It is an amenable number.

109268529409 is a deficient number, since it is larger than the sum of its proper divisors (8405271507).

109268529409 is an equidigital number, since it uses as much as digits as its factorization.

109268529409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8405271506.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 109268529409 in words is "one hundred nine billion, two hundred sixty-eight million, five hundred twenty-nine thousand, four hundred nine".