11989993662 has 24 divisors (see below), whose sum is σ = 27345600360. Its totient is φ = 3786313680.

The previous prime is 11989993601. The next prime is 11989993669. The reversal of 11989993662 is 26639998911.

11989993662 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11989993662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989993669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17528889 + ... + 17529572.

It is an arithmetic number, because the mean of its divisors is an integer number (1139400015).

Almost surely, 2^11989993662 is an apocalyptic number.

11989993662 is an abundant number, since it is smaller than the sum of its proper divisors (15355606698).

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

11989993662 is a wasteful number, since it uses less digits than its factorization.

11989993662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35058488 (or 35058485 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 63.

The spelling of 11989993662 in words is "eleven billion, nine hundred eighty-nine million, nine hundred ninety-three thousand, six hundred sixty-two".