16640109220 has 24 divisors (see below), whose sum is σ = 39936262464. Its totient is φ = 5705180256.

The previous prime is 16640109193. The next prime is 16640109221. The reversal of 16640109220 is 2290104661.

It is not an unprimeable number, because it can be changed into a prime (16640109221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59428822 + ... + 59429101.

It is an arithmetic number, because the mean of its divisors is an integer number (1664010936).

Almost surely, 2^16640109220 is an apocalyptic number.

16640109220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16640109220 is an abundant number, since it is smaller than the sum of its proper divisors (23296153244).

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

16640109220 is a wasteful number, since it uses less digits than its factorization.

16640109220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118857939 (or 118857937 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 16640109220 in words is "sixteen billion, six hundred forty million, one hundred nine thousand, two hundred twenty".