2172258237240 has 576 divisors, whose sum is σ = 8968827591360. Its totient is φ = 451863982080.

The previous prime is 2172258237197. The next prime is 2172258237241. The reversal of 2172258237240 is 427328522712.

2172258237240 is a `hidden beast` number, since 2 + 1 + 7 + 22 + 582 + 3 + 7 + 2 + 40 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172258237241) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 16215012 + ... + 16348428.

It is an arithmetic number, because the mean of its divisors is an integer number (15570881235).

Almost surely, 2^{2172258237240} is an apocalyptic number.

2172258237240 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 2172258237240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4484413795680).

2172258237240 is an abundant number, since it is smaller than the sum of its proper divisors (6796569354120).

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

2172258237240 is a wasteful number, since it uses less digits than its factorization.

2172258237240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133532 (or 133518 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 2172258237240 in words is "two trillion, one hundred seventy-two billion, two hundred fifty-eight million, two hundred thirty-seven thousand, two hundred forty".