18322497945396 has 288 divisors, whose sum is σ = 52279892840448. Its totient is φ = 5380336051200.

The previous prime is 18322497945331. The next prime is 18322497945473. The reversal of 18322497945396 is 69354979422381.

18322497945396 is a `hidden beast` number, since 1 + 8 + 3 + 2 + 2 + 497 + 9 + 45 + 3 + 96 = 666.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 142342561 + ... + 142471223.

It is an arithmetic number, because the mean of its divisors is an integer number (181527405696).

Almost surely, 2^{18322497945396} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18322497945396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26139946420224).

18322497945396 is an abundant number, since it is smaller than the sum of its proper divisors (33957394895052).

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

18322497945396 is a wasteful number, since it uses less digits than its factorization.

18322497945396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128931 (or 128926 counting only the distinct ones).

The product of its digits is 705438720, while the sum is 72.

The spelling of 18322497945396 in words is "eighteen trillion, three hundred twenty-two billion, four hundred ninety-seven million, nine hundred forty-five thousand, three hundred ninety-six".