18222615871488 has 480 divisors, whose sum is σ = 62026075077120. Its totient is φ = 5179315322880.

The previous prime is 18222615871459. The next prime is 18222615871687. The reversal of 18222615871488 is 88417851622281.

It is a happy number.

18222615871488 is a `hidden beast` number, since 1 + 8 + 2 + 2 + 2 + 6 + 1 + 587 + 1 + 48 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 597623923 + ... + 597654413.

It is an arithmetic number, because the mean of its divisors is an integer number (129220989744).

Almost surely, 2^{18222615871488} is an apocalyptic number.

18222615871488 is a gapful number since it is divisible by the number (18) 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 18222615871488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31013037538560).

18222615871488 is an abundant number, since it is smaller than the sum of its proper divisors (43803459205632).

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

18222615871488 is an equidigital number, since it uses as much as digits as its factorization.

18222615871488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30728 (or 30696 counting only the distinct ones).

The product of its digits is 27525120, while the sum is 63.

The spelling of 18222615871488 in words is "eighteen trillion, two hundred twenty-two billion, six hundred fifteen million, eight hundred seventy-one thousand, four hundred eighty-eight".