12081197088 has 96 divisors (see below), whose sum is σ = 35566413120. Its totient is φ = 3989399040.

The previous prime is 12081197077. The next prime is 12081197099. The reversal of 12081197088 is 88079118021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12081197077) and next prime (12081197099).

It is a tau number, because it is divible by the number of its divisors (96).

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, 27108 + ... + 157788.

It is an arithmetic number, because the mean of its divisors is an integer number (370483470).

Almost surely, 2^12081197088 is an apocalyptic number.

12081197088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12081197088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17783206560).

12081197088 is an abundant number, since it is smaller than the sum of its proper divisors (23485216032).

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

12081197088 is a wasteful number, since it uses less digits than its factorization.

12081197088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130807 (or 130793 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 45.

The spelling of 12081197088 in words is "twelve billion, eighty-one million, one hundred ninety-seven thousand, eighty-eight".