16985154697 has 4 divisors (see below), whose sum is σ = 19411605376. Its totient is φ = 14558704020.

The previous prime is 16985154677. The next prime is 16985154707. The reversal of 16985154697 is 79645158961.

16985154697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16985154697 - 2¹⁹ = 16984630409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16985154607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213225329 + ... + 1213225342.

It is an arithmetic number, because the mean of its divisors is an integer number (4852901344).

Almost surely, 2^16985154697 is an apocalyptic number.

It is an amenable number.

16985154697 is a deficient number, since it is larger than the sum of its proper divisors (2426450679).

16985154697 is an equidigital number, since it uses as much as digits as its factorization.

16985154697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426450678.

The product of its digits is 16329600, while the sum is 61.

The spelling of 16985154697 in words is "sixteen billion, nine hundred eighty-five million, one hundred fifty-four thousand, six hundred ninety-seven".