18498321451008 has 1152 divisors, whose sum is σ = 66583850860800. Its totient is φ = 4969208217600.

The previous prime is 18498321451003. The next prime is 18498321451021. The reversal of 18498321451008 is 80015412389481.

18498321451008 is a `hidden beast` number, since 1 + 8 + 4 + 98 + 32 + 1 + 4 + 510 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18498321451003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12490425628 + ... + 12490427108.

It is an arithmetic number, because the mean of its divisors is an integer number (57798481650).

Almost surely, 2^{18498321451008} is an apocalyptic number.

18498321451008 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 18498321451008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33291925430400).

18498321451008 is an abundant number, since it is smaller than the sum of its proper divisors (48085529409792).

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

18498321451008 is a wasteful number, since it uses less digits than its factorization.

18498321451008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 18498321451008 in words is "eighteen trillion, four hundred ninety-eight billion, three hundred twenty-one million, four hundred fifty-one thousand, eight".