12191882872 has 64 divisors (see below), whose sum is σ = 25977672000. Its totient is φ = 5321800704.

The previous prime is 12191882851. The next prime is 12191882903. The reversal of 12191882872 is 27828819121.

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 15 ways as a sum of consecutive naturals, for example, 184254 + ... + 241522.

It is an arithmetic number, because the mean of its divisors is an integer number (405901125).

Almost surely, 2^12191882872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12191882872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12988836000).

12191882872 is an abundant number, since it is smaller than the sum of its proper divisors (13785789128).

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

12191882872 is a wasteful number, since it uses less digits than its factorization.

12191882872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57400 (or 57396 counting only the distinct ones).

The product of its digits is 258048, while the sum is 49.

The spelling of 12191882872 in words is "twelve billion, one hundred ninety-one million, eight hundred eighty-two thousand, eight hundred seventy-two".