11839808069 has 4 divisors (see below), whose sum is σ = 11961868044. Its totient is φ = 11717748096.

The previous prime is 11839808059. The next prime is 11839808089. The reversal of 11839808069 is 96080893811.

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 1941547969 + 9898260100 = 44063^2 + 99490^2 .

It is a cyclic number.

It is not a de Polignac number, because 11839808069 - 2⁴ = 11839808053 is a prime.

It is a super-2 number, since 2×11839808069² (a number of 21 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 11839808069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11839808059) 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, 61029842 + ... + 61030035.

It is an arithmetic number, because the mean of its divisors is an integer number (2990467011).

Almost surely, 2^11839808069 is an apocalyptic number.

It is an amenable number.

11839808069 is a deficient number, since it is larger than the sum of its proper divisors (122059975).

11839808069 is an equidigital number, since it uses as much as digits as its factorization.

11839808069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122059974.

The product of its (nonzero) digits is 746496, while the sum is 53.

The spelling of 11839808069 in words is "eleven billion, eight hundred thirty-nine million, eight hundred eight thousand, sixty-nine".