18222086212590 has 256 divisors, whose sum is σ = 51017279459328. Its totient is φ = 4124564914176.

The previous prime is 18222086212579. The next prime is 18222086212591. The reversal of 18222086212590 is 9521268022281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18222086212591) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 179748297 + ... + 179849643.

It is an arithmetic number, because the mean of its divisors is an integer number (199286247888).

Almost surely, 2^{18222086212590} is an apocalyptic number.

18222086212590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18222086212590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25508639729664).

18222086212590 is an abundant number, since it is smaller than the sum of its proper divisors (32795193246738).

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

18222086212590 is a wasteful number, since it uses less digits than its factorization.

18222086212590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102011.

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 18222086212590 in words is "eighteen trillion, two hundred twenty-two billion, eighty-six million, two hundred twelve thousand, five hundred ninety".