16605388854 has 32 divisors (see below), whose sum is σ = 36908736480. Its totient is φ = 5533948800.

The previous prime is 16605388817. The next prime is 16605388927. The reversal of 16605388854 is 45888350661.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 16605388854.

It is a congruent number.

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, 244114 + ... + 304634.

It is an arithmetic number, because the mean of its divisors is an integer number (1153398015).

Almost surely, 2^16605388854 is an apocalyptic number.

16605388854 is an abundant number, since it is smaller than the sum of its proper divisors (20303347626).

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

16605388854 is a wasteful number, since it uses less digits than its factorization.

16605388854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65613 (or 65607 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 16605388854 in words is "sixteen billion, six hundred five million, three hundred eighty-eight thousand, eight hundred fifty-four".