18680097312 has 384 divisors, whose sum is σ = 58718822400. Its totient is φ = 5764442112.

The previous prime is 18680097311. The next prime is 18680097379. The reversal of 18680097312 is 21379008681.

It is not an unprimeable number, because it can be changed into a prime (18680097311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114601743 + ... + 114601905.

It is an arithmetic number, because the mean of its divisors is an integer number (152913600).

Almost surely, 2^18680097312 is an apocalyptic number.

18680097312 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 18680097312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29359411200).

18680097312 is an abundant number, since it is smaller than the sum of its proper divisors (40038725088).

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

18680097312 is a wasteful number, since it uses less digits than its factorization.

18680097312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 18680097312 in words is "eighteen billion, six hundred eighty million, ninety-seven thousand, three hundred twelve".