2159605722240 has 960 divisors, whose sum is σ = 8369736186240. Its totient is φ = 530313412608.

The previous prime is 2159605722229. The next prime is 2159605722247. The reversal of 2159605722240 is 422275069512.

2159605722240 is a `hidden beast` number, since 2 + 1 + 59 + 6 + 0 + 572 + 2 + 24 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2159605722247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 704141187 + ... + 704144253.

It is an arithmetic number, because the mean of its divisors is an integer number (8718475194).

Almost surely, 2^{2159605722240} is an apocalyptic number.

2159605722240 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 2159605722240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4184868093120).

2159605722240 is an abundant number, since it is smaller than the sum of its proper divisors (6210130464000).

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

2159605722240 is a wasteful number, since it uses less digits than its factorization.

2159605722240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179 (or 3141 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 2159605722240 in words is "two trillion, one hundred fifty-nine billion, six hundred five million, seven hundred twenty-two thousand, two hundred forty".