16068049665 has 48 divisors (see below), whose sum is σ = 26946407040. Its totient is φ = 8175340800.

The previous prime is 16068049661. The next prime is 16068049667. The reversal of 16068049665 is 56694086061.

It is a happy number.

It is not a de Polignac number, because 16068049665 - 2² = 16068049661 is a prime.

It is a super-2 number, since 2×16068049665² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16068049661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3242940 + ... + 3247890.

It is an arithmetic number, because the mean of its divisors is an integer number (561383480).

Almost surely, 2^16068049665 is an apocalyptic number.

16068049665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16068049665 is a deficient number, since it is larger than the sum of its proper divisors (10878357375).

16068049665 is a wasteful number, since it uses less digits than its factorization.

16068049665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5414 (or 5391 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 16068049665 in words is "sixteen billion, sixty-eight million, forty-nine thousand, six hundred sixty-five".