16550009860 has 12 divisors (see below), whose sum is σ = 34755020748. Its totient is φ = 6620003936.

The previous prime is 16550009851. The next prime is 16550009873. The reversal of 16550009860 is 6890005561.

It can be written as a sum of positive squares in 2 ways, for example, as 10413794304 + 6136215556 = 102048^2 + 78334^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413750227 + ... + 413750266.

It is an arithmetic number, because the mean of its divisors is an integer number (2896251729).

Almost surely, 2^16550009860 is an apocalyptic number.

16550009860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16550009860 is an abundant number, since it is smaller than the sum of its proper divisors (18205010888).

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

16550009860 is a wasteful number, since it uses less digits than its factorization.

16550009860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827500502 (or 827500500 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 16550009860 in words is "sixteen billion, five hundred fifty million, nine thousand, eight hundred sixty".