18384897116560 has 80 divisors (see below), whose sum is σ = 46163359824624. Its totient is φ = 6769039343616.

The previous prime is 18384897116533. The next prime is 18384897116569. The reversal of 18384897116560 is 6561179848381.

It can be written as a sum of positive squares in 8 ways, for example, as 4679382323344 + 13705514793216 = 2163188^2 + 3702096^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (18384897116569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24672237 + ... + 25406476.

Almost surely, 2^{18384897116560} is an apocalyptic number.

18384897116560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18384897116560 is an abundant number, since it is smaller than the sum of its proper divisors (27778462708064).

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

18384897116560 is a wasteful number, since it uses less digits than its factorization.

18384897116560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50079092 (or 50079086 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 67.

The spelling of 18384897116560 in words is "eighteen trillion, three hundred eighty-four billion, eight hundred ninety-seven million, one hundred sixteen thousand, five hundred sixty".