18416541958416 has 240 divisors, whose sum is σ = 61163009316864. Its totient is φ = 5255177035392.

The previous prime is 18416541958387. The next prime is 18416541958417. The reversal of 18416541958416 is 61485914561481.

It is a happy number.

18416541958416 is a `hidden beast` number, since 1 + 8 + 4 + 1 + 6 + 5 + 41 + 9 + 584 + 1 + 6 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (18416541958417) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20989081 + ... + 21848903.

Almost surely, 2^{18416541958416} is an apocalyptic number.

18416541958416 is a gapful number since it is divisible by the number (16) 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 18416541958416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30581504658432).

18416541958416 is an abundant number, since it is smaller than the sum of its proper divisors (42746467358448).

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

18416541958416 is an equidigital number, since it uses as much as digits as its factorization.

18416541958416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860640 (or 860622 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 63.

The spelling of 18416541958416 in words is "eighteen trillion, four hundred sixteen billion, five hundred forty-one million, nine hundred fifty-eight thousand, four hundred sixteen".