16905980529 has 15 divisors (see below), whose sum is σ = 25256361097. Its totient is φ = 11269873548.

The previous prime is 16905980527. The next prime is 16905980557. The reversal of 16905980529 is 92508950961.

The square root of 16905980529 is 130023.

It is a perfect power (a square), and thus also a powerful number.

16905980529 is a `hidden beast` number, since 1 + 69 + 0 + 59 + 8 + 0 + 529 = 666.

It is not a de Polignac number, because 16905980529 - 2¹ = 16905980527 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16905980521) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1162984 + ... + 1177430.

Almost surely, 2^16905980529 is an apocalyptic number.

16905980529 is the 130023-rd square number.

16905980529 is the 65012-nd centered octagonal number.

It is an amenable number.

16905980529 is a deficient number, since it is larger than the sum of its proper divisors (8350380568).

16905980529 is an frugal number, since it uses more digits than its factorization.

16905980529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28906 (or 14450 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The spelling of 16905980529 in words is "sixteen billion, nine hundred five million, nine hundred eighty thousand, five hundred twenty-nine".