16661420530 has 16 divisors (see below), whose sum is σ = 31569007680. Its totient is φ = 6313801392.

The previous prime is 16661420527. The next prime is 16661420539. The reversal of 16661420530 is 3502416661.

16661420530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16661420539) 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 7 ways as a sum of consecutive naturals, for example, 43845654 + ... + 43846033.

It is an arithmetic number, because the mean of its divisors is an integer number (1973062980).

Almost surely, 2^16661420530 is an apocalyptic number.

16661420530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16661420530 is a deficient number, since it is larger than the sum of its proper divisors (14907587150).

16661420530 is a wasteful number, since it uses less digits than its factorization.

16661420530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87691713.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 16661420530 in words is "sixteen billion, six hundred sixty-one million, four hundred twenty thousand, five hundred thirty".