2187389222240 has 192 divisors, whose sum is σ = 5499319392000. Its totient is φ = 820714782720.

The previous prime is 2187389222201. The next prime is 2187389222309. The reversal of 2187389222240 is 422229837812.

It is a super-2 number, since 2×2187389222240² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 45443306 + ... + 45491414.

It is an arithmetic number, because the mean of its divisors is an integer number (28642288500).

Almost surely, 2^{2187389222240} is an apocalyptic number.

2187389222240 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 2187389222240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2749659696000).

2187389222240 is an abundant number, since it is smaller than the sum of its proper divisors (3311930169760).

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

2187389222240 is a wasteful number, since it uses less digits than its factorization.

2187389222240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48433 (or 48425 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 2187389222240 in words is "two trillion, one hundred eighty-seven billion, three hundred eighty-nine million, two hundred twenty-two thousand, two hundred forty".