17990847680 has 168 divisors, whose sum is σ = 48833989200. Its totient is φ = 6292795392.

The previous prime is 17990847673. The next prime is 17990847727. The reversal of 17990847680 is 8674809971.

It is a super-2 number, since 2×17990847680² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1018766 + ... + 1036274.

Almost surely, 2^17990847680 is an apocalyptic number.

17990847680 is a gapful number since it is divisible by the number (10) 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 17990847680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24416994600).

17990847680 is an abundant number, since it is smaller than the sum of its proper divisors (30843141520).

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

17990847680 is a wasteful number, since it uses less digits than its factorization.

17990847680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17571 (or 17548 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 59.

The spelling of 17990847680 in words is "seventeen billion, nine hundred ninety million, eight hundred forty-seven thousand, six hundred eighty".