16221741990 has 32 divisors (see below), whose sum is σ = 40624886016. Its totient is φ = 4137719520.

The previous prime is 16221741947. The next prime is 16221741997. The reversal of 16221741990 is 9914712261.

16221741990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221741997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11754196 + ... + 11755575.

It is an arithmetic number, because the mean of its divisors is an integer number (1269527688).

Almost surely, 2^16221741990 is an apocalyptic number.

16221741990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16221741990 is an abundant number, since it is smaller than the sum of its proper divisors (24403144026).

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

16221741990 is a wasteful number, since it uses less digits than its factorization.

16221741990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23509804.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 16221741990 in words is "sixteen billion, two hundred twenty-one million, seven hundred forty-one thousand, nine hundred ninety".