113391809669 has 4 divisors (see below), whose sum is σ = 113392590444. Its totient is φ = 113391028896.

The previous prime is 113391809651. The next prime is 113391809719. The reversal of 113391809669 is 966908193311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 93577869025 + 19813940644 = 305905^2 + 140762^2 .

It is a cyclic number.

It is not a de Polignac number, because 113391809669 - 2³² = 109096842373 is a prime.

It is a super-2 number, since 2×113391809669² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113391809569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101072 + ... + 486825.

It is an arithmetic number, because the mean of its divisors is an integer number (28348147611).

Almost surely, 2^113391809669 is an apocalyptic number.

It is an amenable number.

113391809669 is a deficient number, since it is larger than the sum of its proper divisors (780775).

113391809669 is an equidigital number, since it uses as much as digits as its factorization.

113391809669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780774.

The product of its (nonzero) digits is 1889568, while the sum is 56.

The spelling of 113391809669 in words is "one hundred thirteen billion, three hundred ninety-one million, eight hundred nine thousand, six hundred sixty-nine".