16639160885 has 16 divisors (see below), whose sum is σ = 20051282160. Its totient is φ = 13255211520.

The previous prime is 16639160861. The next prime is 16639160897. The reversal of 16639160885 is 58806193661.

It can be written as a sum of positive squares in 8 ways, for example, as 3106724644 + 13532436241 = 55738^2 + 116329^2 .

It is not a de Polignac number, because 16639160885 - 2¹⁰ = 16639159861 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2165831 + ... + 2173499.

It is an arithmetic number, because the mean of its divisors is an integer number (1253205135).

Almost surely, 2^16639160885 is an apocalyptic number.

It is an amenable number.

16639160885 is a deficient number, since it is larger than the sum of its proper divisors (3412121275).

16639160885 is a wasteful number, since it uses less digits than its factorization.

16639160885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9448.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 16639160885 in words is "sixteen billion, six hundred thirty-nine million, one hundred sixty thousand, eight hundred eighty-five".