16688223740 has 48 divisors (see below), whose sum is σ = 37213344000. Its totient is φ = 6264579072.

The previous prime is 16688223731. The next prime is 16688223749. The reversal of 16688223740 is 4732288661.

It is an interprime number because it is at equal distance from previous prime (16688223731) and next prime (16688223749).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16688223749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48341 + ... + 188979.

It is an arithmetic number, because the mean of its divisors is an integer number (775278000).

Almost surely, 2^16688223740 is an apocalyptic number.

16688223740 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 16688223740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18606672000).

16688223740 is an abundant number, since it is smaller than the sum of its proper divisors (20525120260).

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

16688223740 is a wasteful number, since it uses less digits than its factorization.

16688223740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141014 (or 141012 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 16688223740 in words is "sixteen billion, six hundred eighty-eight million, two hundred twenty-three thousand, seven hundred forty".