16597818489 has 16 divisors (see below), whose sum is σ = 25330314240. Its totient is φ = 9470067600.

The previous prime is 16597818427. The next prime is 16597818499. The reversal of 16597818489 is 98481879561.

It is not a de Polignac number, because 16597818489 - 2⁷ = 16597818361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16597818499) 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, 585837 + ... + 613514.

It is an arithmetic number, because the mean of its divisors is an integer number (1583144640).

Almost surely, 2^16597818489 is an apocalyptic number.

It is an amenable number.

16597818489 is a deficient number, since it is larger than the sum of its proper divisors (8732495751).

16597818489 is a wasteful number, since it uses less digits than its factorization.

16597818489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200020.

The product of its digits is 34836480, while the sum is 66.

The spelling of 16597818489 in words is "sixteen billion, five hundred ninety-seven million, eight hundred eighteen thousand, four hundred eighty-nine".