11990891140 has 24 divisors (see below), whose sum is σ = 25993158912. Its totient is φ = 4641635040.

The previous prime is 11990891131. The next prime is 11990891141. The reversal of 11990891140 is 4119809911.

11990891140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11990891141) 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 7 ways as a sum of consecutive naturals, for example, 9669454 + ... + 9670693.

It is an arithmetic number, because the mean of its divisors is an integer number (1083048288).

Almost surely, 2^11990891140 is an apocalyptic number.

11990891140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11990891140 is an abundant number, since it is smaller than the sum of its proper divisors (14002267772).

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

11990891140 is a wasteful number, since it uses less digits than its factorization.

11990891140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19340187 (or 19340185 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 43.

The spelling of 11990891140 in words is "eleven billion, nine hundred ninety million, eight hundred ninety-one thousand, one hundred forty".