11989245680 has 40 divisors (see below), whose sum is σ = 27938002032. Its totient is φ = 4784858624.

The previous prime is 11989245661. The next prime is 11989245721. The reversal of 11989245680 is 8654298911.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133709 + ... + 204588.

Almost surely, 2^11989245680 is an apocalyptic number.

11989245680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11989245680 is an abundant number, since it is smaller than the sum of its proper divisors (15948756352).

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

11989245680 is a wasteful number, since it uses less digits than its factorization.

11989245680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338753 (or 338747 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 53.

The spelling of 11989245680 in words is "eleven billion, nine hundred eighty-nine million, two hundred forty-five thousand, six hundred eighty".