11839808840 has 32 divisors (see below), whose sum is σ = 26938899000. Its totient is φ = 4682709504.

The previous prime is 11839808839. The next prime is 11839808843. The reversal of 11839808840 is 4880893811.

It can be written as a sum of positive squares in 4 ways, for example, as 9058090276 + 2781718564 = 95174^2 + 52742^2 .

It is not an unprimeable number, because it can be changed into a prime (11839808843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1659335 + ... + 1666454.

Almost surely, 2^11839808840 is an apocalyptic number.

11839808840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11839808840 is an abundant number, since it is smaller than the sum of its proper divisors (15099090160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11839808840 is a wasteful number, since it uses less digits than its factorization.

11839808840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325889 (or 3325885 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 50.

The spelling of 11839808840 in words is "eleven billion, eight hundred thirty-nine million, eight hundred eight thousand, eight hundred forty".