16666400030 has 16 divisors (see below), whose sum is σ = 34285165920. Its totient is φ = 5714194272.

The previous prime is 16666399999. The next prime is 16666400033. The reversal of 16666400030 is 3000466661.

16666400030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16666400030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666400033) 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, 119045645 + ... + 119045784.

It is an arithmetic number, because the mean of its divisors is an integer number (2142822870).

Almost surely, 2^16666400030 is an apocalyptic number.

16666400030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16666400030 is an abundant number, since it is smaller than the sum of its proper divisors (17618765890).

16666400030 is a wasteful number, since it uses less digits than its factorization.

16666400030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238091443.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 16666400030 its reverse (3000466661), we get a palindrome (19666866691).

The spelling of 16666400030 in words is "sixteen billion, six hundred sixty-six million, four hundred thousand, thirty".