2195171972580 has 192 divisors, whose sum is σ = 6373752053760. Its totient is φ = 564186508800.

The previous prime is 2195171972561. The next prime is 2195171972599. The reversal of 2195171972580 is 852791715912.

It is an interprime number because it is at equal distance from previous prime (2195171972561) and next prime (2195171972599).

It is a self number, because there is not a number n which added to its sum of digits gives 2195171972580.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67140997 + ... + 67173683.

It is an arithmetic number, because the mean of its divisors is an integer number (33196625280).

Almost surely, 2^{2195171972580} is an apocalyptic number.

2195171972580 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 2195171972580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3186876026880).

2195171972580 is an abundant number, since it is smaller than the sum of its proper divisors (4178580081180).

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

2195171972580 is a wasteful number, since it uses less digits than its factorization.

2195171972580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33130 (or 33128 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 57.

The spelling of 2195171972580 in words is "two trillion, one hundred ninety-five billion, one hundred seventy-one million, nine hundred seventy-two thousand, five hundred eighty".