16788662220 has 96 divisors (see below), whose sum is σ = 51337794816. Its totient is φ = 4065529600.

The previous prime is 16788662207. The next prime is 16788662221. The reversal of 16788662220 is 2226688761.

It is a self number, because there is not a number n which added to its sum of digits gives 16788662220.

It is not an unprimeable number, because it can be changed into a prime (16788662221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 611590 + ... + 638450.

It is an arithmetic number, because the mean of its divisors is an integer number (534768696).

Almost surely, 2^16788662220 is an apocalyptic number.

16788662220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16788662220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25668897408).

16788662220 is an abundant number, since it is smaller than the sum of its proper divisors (34549132596).

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

16788662220 is a wasteful number, since it uses less digits than its factorization.

16788662220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27831 (or 27829 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 16788662220 in words is "sixteen billion, seven hundred eighty-eight million, six hundred sixty-two thousand, two hundred twenty".