16650032820 has 24 divisors (see below), whose sum is σ = 46620092064. Its totient is φ = 4440008736.

The previous prime is 16650032807. The next prime is 16650032837. The reversal of 16650032820 is 2823005661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138750214 + ... + 138750333.

It is an arithmetic number, because the mean of its divisors is an integer number (1942503836).

Almost surely, 2^16650032820 is an apocalyptic number.

16650032820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16650032820 is an abundant number, since it is smaller than the sum of its proper divisors (29970059244).

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

16650032820 is a wasteful number, since it uses less digits than its factorization.

16650032820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277500559 (or 277500557 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 16650032820 in words is "sixteen billion, six hundred fifty million, thirty-two thousand, eight hundred twenty".