18797521930824 has 128 divisors (see below), whose sum is σ = 57867563255040. Its totient is φ = 4955099553792.

The previous prime is 18797521930793. The next prime is 18797521930843. The reversal of 18797521930824 is 42803912579781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2193424 + ... + 6512000.

It is an arithmetic number, because the mean of its divisors is an integer number (452090337930).

Almost surely, 2^{18797521930824} is an apocalyptic number.

18797521930824 is a gapful number since it is divisible by the number (14) 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 18797521930824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28933781627520).

18797521930824 is an abundant number, since it is smaller than the sum of its proper divisors (39070041324216).

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

18797521930824 is a wasteful number, since it uses less digits than its factorization.

18797521930824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320599 (or 4320595 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 66.

The spelling of 18797521930824 in words is "eighteen trillion, seven hundred ninety-seven billion, five hundred twenty-one million, nine hundred thirty thousand, eight hundred twenty-four".