22158809283840 has 144 divisors (see below), whose sum is σ = 70794677213568. Its totient is φ = 5906930065408.

The previous prime is 22158809283839. The next prime is 22158809283841. The reversal of 22158809283840 is 4838290885122.

It is an interprime number because it is at equal distance from previous prime (22158809283839) and next prime (22158809283841).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22158809283841) 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 15 ways as a sum of consecutive naturals, for example, 9877069 + ... + 11911091.

It is an arithmetic number, because the mean of its divisors is an integer number (491629702872).

Almost surely, 2^{22158809283840} is an apocalyptic number.

22158809283840 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 22158809283840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35397338606784).

22158809283840 is an abundant number, since it is smaller than the sum of its proper divisors (48635867929728).

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

22158809283840 is a wasteful number, since it uses less digits than its factorization.

22158809283840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036884 (or 2036870 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 60.

The spelling of 22158809283840 in words is "twenty-two trillion, one hundred fifty-eight billion, eight hundred nine million, two hundred eighty-three thousand, eight hundred forty".