11722391118 has 20 divisors (see below), whose sum is σ = 26266839720. Its totient is φ = 3907463652.

The previous prime is 11722391101. The next prime is 11722391143. The reversal of 11722391118 is 81119322711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 36180058 + ... + 36180381.

It is an arithmetic number, because the mean of its divisors is an integer number (1313341986).

Almost surely, 2^11722391118 is an apocalyptic number.

11722391118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11722391118 is an abundant number, since it is smaller than the sum of its proper divisors (14544448602).

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

11722391118 is an equidigital number, since it uses as much as digits as its factorization.

11722391118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72360453 (or 72360444 counting only the distinct ones).

The product of its digits is 6048, while the sum is 36.

It can be divided in two parts, 117223911 and 18, that added together give a square (117223929 = 10827²).

The spelling of 11722391118 in words is "eleven billion, seven hundred twenty-two million, three hundred ninety-one thousand, one hundred eighteen".