16997207736289 has 9 divisors (see below), whose sum is σ = 18682931078931. Its totient is φ = 15451965805320.

The previous prime is 16997207736287. The next prime is 16997207736307. The reversal of 16997207736289 is 98263770279961.

The square root of 16997207736289 is 4122767.

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

It can be written as a sum of positive squares in only one way, i.e., 123942723025 + 16873265013264 = 352055^2 + 4107708^2 .

It is not a de Polignac number, because 16997207736289 - 2¹ = 16997207736287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16997207736287) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 45163039 + ... + 45537835.

Almost surely, 2^{16997207736289} is an apocalyptic number.

16997207736289 is the 4122767-th square number.

16997207736289 is the 2061384-th centered octagonal number.

It is an amenable number.

16997207736289 is a deficient number, since it is larger than the sum of its proper divisors (1685723342642).

16997207736289 is an frugal number, since it uses more digits than its factorization.

16997207736289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749616 (or 374808 counting only the distinct ones).

The product of its (nonzero) digits is 864162432, while the sum is 76.

The spelling of 16997207736289 in words is "sixteen trillion, nine hundred ninety-seven billion, two hundred seven million, seven hundred thirty-six thousand, two hundred eighty-nine".