16550495920 has 80 divisors (see below), whose sum is σ = 44722494720. Its totient is φ = 5578267392.

The previous prime is 16550495903. The next prime is 16550495933. The reversal of 16550495920 is 2959405561.

It is a tau number, because it is divible by the number of its divisors (80).

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, 217422 + ... + 283501.

It is an arithmetic number, because the mean of its divisors is an integer number (559031184).

Almost surely, 2^16550495920 is an apocalyptic number.

16550495920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16550495920 is an abundant number, since it is smaller than the sum of its proper divisors (28171998800).

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

16550495920 is a wasteful number, since it uses less digits than its factorization.

16550495920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501002 (or 500996 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 16550495920 in words is "sixteen billion, five hundred fifty million, four hundred ninety-five thousand, nine hundred twenty".