2195149666320 has 2880 divisors, whose sum is σ = 9588455585280. Its totient is φ = 446352850944.

The previous prime is 2195149666319. The next prime is 2195149666361. The reversal of 2195149666320 is 236669415912.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 51049992219 + ... + 51049992261.

It is an arithmetic number, because the mean of its divisors is an integer number (3329324856).

Almost surely, 2^{2195149666320} is an apocalyptic number.

2195149666320 is a gapful number since it is divisible by the number (20) 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 2195149666320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4794227792640).

2195149666320 is an abundant number, since it is smaller than the sum of its proper divisors (7393305918960).

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

2195149666320 is a wasteful number, since it uses less digits than its factorization.

2195149666320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 2195149666320 in words is "two trillion, one hundred ninety-five billion, one hundred forty-nine million, six hundred sixty-six thousand, three hundred twenty".