16021685138067 has 18 divisors (see below), whose sum is σ = 26920790674908. Its totient is φ = 9155248650072.

The previous prime is 16021685138033. The next prime is 16021685138117. The reversal of 16021685138067 is 76083158612061.

It is a happy number.

16021685138067 is a `hidden beast` number, since 1 + 6 + 0 + 2 + 1 + 68 + 513 + 8 + 0 + 67 = 666.

It is not a de Polignac number, because 16021685138067 - 2⁶ = 16021685138003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16021685138027) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18165175453 + ... + 18165176334.

Almost surely, 2^{16021685138067} is an apocalyptic number.

16021685138067 is a deficient number, since it is larger than the sum of its proper divisors (10899105536841).

16021685138067 is a wasteful number, since it uses less digits than its factorization.

16021685138067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36330351807 (or 36330351797 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 16021685138067 in words is "sixteen trillion, twenty-one billion, six hundred eighty-five million, one hundred thirty-eight thousand, sixty-seven".