12195198180 has 288 divisors, whose sum is σ = 41541147648. Its totient is φ = 2870380800.

The previous prime is 12195198173. The next prime is 12195198199. The reversal of 12195198180 is 8189159121.

12195198180 is a `hidden beast` number, since 121 + 9 + 519 + 8 + 1 + 8 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19326465 + ... + 19327095.

It is an arithmetic number, because the mean of its divisors is an integer number (144240096).

Almost surely, 2^12195198180 is an apocalyptic number.

12195198180 is a gapful number since it is divisible by the number (10) 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 12195198180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20770573824).

12195198180 is an abundant number, since it is smaller than the sum of its proper divisors (29345949468).

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

12195198180 is a wasteful number, since it uses less digits than its factorization.

12195198180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 45.

The spelling of 12195198180 in words is "twelve billion, one hundred ninety-five million, one hundred ninety-eight thousand, one hundred eighty".