16723387138 has 16 divisors (see below), whose sum is σ = 25987700160. Its totient is φ = 8061656400.

The previous prime is 16723387133. The next prime is 16723387151. The reversal of 16723387138 is 83178332761.

It is a junction number, because it is equal to n+sod(n) for n = 16723387091 and 16723387100.

It is not an unprimeable number, because it can be changed into a prime (16723387133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168558 + ... + 248713.

It is an arithmetic number, because the mean of its divisors is an integer number (1624231260).

Almost surely, 2^16723387138 is an apocalyptic number.

16723387138 is a deficient number, since it is larger than the sum of its proper divisors (9264313022).

16723387138 is a wasteful number, since it uses less digits than its factorization.

16723387138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417993.

The product of its digits is 1016064, while the sum is 49.

The spelling of 16723387138 in words is "sixteen billion, seven hundred twenty-three million, three hundred eighty-seven thousand, one hundred thirty-eight".