198166664205000 has 240 divisors, whose sum is σ = 671141647176000. Its totient is φ = 52806654000000.

The previous prime is 198166664204983. The next prime is 198166664205023. The reversal of 198166664205000 is 502466661891.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 61381125 + ... + 64528875.

It is an arithmetic number, because the mean of its divisors is an integer number (2796423529900).

Almost surely, 2^{198166664205000} is an apocalyptic number.

198166664205000 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 198166664205000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335570823588000).

198166664205000 is an abundant number, since it is smaller than the sum of its proper divisors (472974982971000).

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

198166664205000 is a wasteful number, since it uses less digits than its factorization.

198166664205000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149182 (or 3149160 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 198166664205000 in words is "one hundred ninety-eight trillion, one hundred sixty-six billion, six hundred sixty-four million, two hundred five thousand".