18168298529472 has 896 divisors, whose sum is σ = 68394344775680. Its totient is φ = 4600401039360.

The previous prime is 18168298529387. The next prime is 18168298529497. The reversal of 18168298529472 is 27492589286181.

18168298529472 is a `hidden beast` number, since 1 + 8 + 1 + 6 + 8 + 2 + 98 + 529 + 4 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 18168298529472.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 619070703 + ... + 619100049.

It is an arithmetic number, because the mean of its divisors is an integer number (76332974080).

Almost surely, 2^{18168298529472} is an apocalyptic number.

18168298529472 is a gapful number since it is divisible by the number (12) 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 18168298529472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34197172387840).

18168298529472 is an abundant number, since it is smaller than the sum of its proper divisors (50226046246208).

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

18168298529472 is a wasteful number, since it uses less digits than its factorization.

18168298529472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29546 (or 29530 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 72.

The spelling of 18168298529472 in words is "eighteen trillion, one hundred sixty-eight billion, two hundred ninety-eight million, five hundred twenty-nine thousand, four hundred seventy-two".