14591989800 has 144 divisors (see below), whose sum is σ = 50144677440. Its totient is φ = 3800684160.

The previous prime is 14591989781. The next prime is 14591989807. The reversal of 14591989800 is 898919541.

It is not an unprimeable number, because it can be changed into a prime (14591989807) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16864 + ... + 171663.

Almost surely, 2^14591989800 is an apocalyptic number.

14591989800 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 14591989800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25072338720).

14591989800 is an abundant number, since it is smaller than the sum of its proper divisors (35552687640).

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

14591989800 is a wasteful number, since it uses less digits than its factorization.

14591989800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188592 (or 188580 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 14591989800 in words is "fourteen billion, five hundred ninety-one million, nine hundred eighty-nine thousand, eight hundred".