16985154547 has 16 divisors (see below), whose sum is σ = 17693443872. Its totient is φ = 16291411200.

The previous prime is 16985154521. The next prime is 16985154587. The reversal of 16985154547 is 74545158961.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16985154547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16985154587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 860968 + ... + 880474.

It is an arithmetic number, because the mean of its divisors is an integer number (1105840242).

Almost surely, 2^16985154547 is an apocalyptic number.

16985154547 is a deficient number, since it is larger than the sum of its proper divisors (708289325).

16985154547 is a wasteful number, since it uses less digits than its factorization.

16985154547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19878.

The product of its digits is 6048000, while the sum is 55.

The spelling of 16985154547 in words is "sixteen billion, nine hundred eighty-five million, one hundred fifty-four thousand, five hundred forty-seven".