16986505608 has 24 divisors (see below), whose sum is σ = 46005119550. Its totient is φ = 5662168512.

The previous prime is 16986505597. The next prime is 16986505631. The reversal of 16986505608 is 80650568961.

It is a happy number.

16986505608 is a `hidden beast` number, since 16 + 9 + 8 + 65 + 0 + 560 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16941104964 + 45400644 = 130158^2 + 6738^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117961773 + ... + 117961916.

Almost surely, 2^16986505608 is an apocalyptic number.

16986505608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16986505608 is an abundant number, since it is smaller than the sum of its proper divisors (29018613942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16986505608 is a wasteful number, since it uses less digits than its factorization.

16986505608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235923701 (or 235923694 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 16986505608 in words is "sixteen billion, nine hundred eighty-six million, five hundred five thousand, six hundred eight".