16089644040 has 64 divisors (see below), whose sum is σ = 48514023360. Its totient is φ = 4268785920.

The previous prime is 16089644027. The next prime is 16089644057. The reversal of 16089644040 is 4044698061.

It is a junction number, because it is equal to n+sod(n) for n = 16089643983 and 16089644001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316666 + ... + 363945.

It is an arithmetic number, because the mean of its divisors is an integer number (758031615).

Almost surely, 2^16089644040 is an apocalyptic number.

16089644040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16089644040 is an abundant number, since it is smaller than the sum of its proper divisors (32424379320).

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

16089644040 is a wasteful number, since it uses less digits than its factorization.

16089644040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680822 (or 680818 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 16089644040 in words is "sixteen billion, eighty-nine million, six hundred forty-four thousand, forty".