16668115968 has 132 divisors (see below), whose sum is σ = 51680396112. Its totient is φ = 4762275840.

The previous prime is 16668115967. The next prime is 16668115999. The reversal of 16668115968 is 86951186661.

It is a super-3 number, since 3×16668115968³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16668115967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95163 + ... + 205893.

Almost surely, 2^16668115968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16668115968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25840198056).

16668115968 is an abundant number, since it is smaller than the sum of its proper divisors (35012280144).

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

16668115968 is a wasteful number, since it uses less digits than its factorization.

16668115968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110768 (or 110743 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 57.

The spelling of 16668115968 in words is "sixteen billion, six hundred sixty-eight million, one hundred fifteen thousand, nine hundred sixty-eight".