16665420014 has 16 divisors (see below), whose sum is σ = 26241891840. Its totient is φ = 7927234680.

The previous prime is 16665419999. The next prime is 16665420043. The reversal of 16665420014 is 41002456661.

16665420014 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 an unprimeable number.

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, 2274284 + ... + 2281599.

It is an arithmetic number, because the mean of its divisors is an integer number (1640118240).

Almost surely, 2^16665420014 is an apocalyptic number.

16665420014 is a deficient number, since it is larger than the sum of its proper divisors (9576471826).

16665420014 is a wasteful number, since it uses less digits than its factorization.

16665420014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555975.

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 16665420014 its reverse (41002456661), we get a palindrome (57667876675).

The spelling of 16665420014 in words is "sixteen billion, six hundred sixty-five million, four hundred twenty thousand, fourteen".