16697318872503 has 64 divisors (see below), whose sum is σ = 23861432770560. Its totient is φ = 10360589973888.

The previous prime is 16697318872463. The next prime is 16697318872513. The reversal of 16697318872503 is 30527881379661.

It is not a de Polignac number, because 16697318872503 - 2¹⁰ = 16697318871479 is a prime.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16697318872513) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 923668501 + ... + 923686577.

It is an arithmetic number, because the mean of its divisors is an integer number (372834887040).

Almost surely, 2^{16697318872503} is an apocalyptic number.

16697318872503 is a deficient number, since it is larger than the sum of its proper divisors (7164113898057).

16697318872503 is a wasteful number, since it uses less digits than its factorization.

16697318872503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19308.

The product of its (nonzero) digits is 91445760, while the sum is 66.

The spelling of 16697318872503 in words is "sixteen trillion, six hundred ninety-seven billion, three hundred eighteen million, eight hundred seventy-two thousand, five hundred three".