16668343351 has 16 divisors (see below), whose sum is σ = 19169884800. Its totient is φ = 14333608800.

The previous prime is 16668343339. The next prime is 16668343421. The reversal of 16668343351 is 15334386661.

It is a cyclic number.

It is not a de Polignac number, because 16668343351 - 2²³ = 16659954743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668343301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77221 + ... + 198241.

It is an arithmetic number, because the mean of its divisors is an integer number (1198117800).

Almost surely, 2^16668343351 is an apocalyptic number.

16668343351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16668343351 is a deficient number, since it is larger than the sum of its proper divisors (2501541449).

16668343351 is a wasteful number, since it uses less digits than its factorization.

16668343351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121710.

The product of its digits is 933120, while the sum is 46.

The spelling of 16668343351 in words is "sixteen billion, six hundred sixty-eight million, three hundred forty-three thousand, three hundred fifty-one".