11800981759 has 4 divisors (see below), whose sum is σ = 13486836304. Its totient is φ = 10115127216.

The previous prime is 11800981729. The next prime is 11800981807. The reversal of 11800981759 is 95718900811.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11800981759 - 2⁵ = 11800981727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11800981729) 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, 842927262 + ... + 842927275.

It is an arithmetic number, because the mean of its divisors is an integer number (3371709076).

Almost surely, 2^11800981759 is an apocalyptic number.

11800981759 is a deficient number, since it is larger than the sum of its proper divisors (1685854545).

11800981759 is an equidigital number, since it uses as much as digits as its factorization.

11800981759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685854544.

The product of its (nonzero) digits is 181440, while the sum is 49.

The spelling of 11800981759 in words is "eleven billion, eight hundred million, nine hundred eighty-one thousand, seven hundred fifty-nine".