11988891874 has 8 divisors (see below), whose sum is σ = 17983803600. Its totient is φ = 5994290676.

The previous prime is 11988891851. The next prime is 11988891883. The reversal of 11988891874 is 47819888911.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 102277 + ... + 185575.

It is an arithmetic number, because the mean of its divisors is an integer number (2247975450).

Almost surely, 2^11988891874 is an apocalyptic number.

11988891874 is a deficient number, since it is larger than the sum of its proper divisors (5994911726).

11988891874 is an equidigital number, since it uses as much as digits as its factorization.

11988891874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155264.

The product of its digits is 9289728, while the sum is 64.

The spelling of 11988891874 in words is "eleven billion, nine hundred eighty-eight million, eight hundred ninety-one thousand, eight hundred seventy-four".