12196591896 has 64 divisors (see below), whose sum is σ = 31237240320. Its totient is φ = 3966318720.

The previous prime is 12196591879. The next prime is 12196591907. The reversal of 12196591896 is 69819569121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 933666 + ... + 946638.

It is an arithmetic number, because the mean of its divisors is an integer number (488081880).

Almost surely, 2^12196591896 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 12196591896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15618620160).

12196591896 is an abundant number, since it is smaller than the sum of its proper divisors (19040648424).

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

12196591896 is a wasteful number, since it uses less digits than its factorization.

12196591896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13936 (or 13932 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 57.

The spelling of 12196591896 in words is "twelve billion, one hundred ninety-six million, five hundred ninety-one thousand, eight hundred ninety-six".