2173123872000 has 864 divisors, whose sum is σ = 8420955903360. Its totient is φ = 536095948800.

The previous prime is 2173123871929. The next prime is 2173123872071. The reversal of 2173123872000 is 2783213712.

2173123872000 is a `hidden beast` number, since 2 + 1 + 73 + 1 + 2 + 387 + 200 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2173123871929) and next prime (2173123872071).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 288860239 + ... + 288867761.

It is an arithmetic number, because the mean of its divisors is an integer number (9746476740).

Almost surely, 2^{2173123872000} is an apocalyptic number.

2173123872000 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 2173123872000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4210477951680).

2173123872000 is an abundant number, since it is smaller than the sum of its proper divisors (6247832031360).

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

2173123872000 is a wasteful number, since it uses less digits than its factorization.

2173123872000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636 (or 7609 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 2173123872000 in words is "two trillion, one hundred seventy-three billion, one hundred twenty-three million, eight hundred seventy-two thousand".