16956467089 has 9 divisors (see below), whose sum is σ = 17068800081. Its totient is φ = 16844871120.

The previous prime is 16956467071. The next prime is 16956467093. The reversal of 16956467089 is 98076465961.

The square root of 16956467089 is 130217.

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

It can be written as a sum of positive squares in 4 ways, for example, as 11332667025 + 5623800064 = 106455^2 + 74992^2 .

It is not a de Polignac number, because 16956467089 - 2¹⁷ = 16956336017 is a prime.

It is a super-2 number, since 2×16956467089² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16956467039) 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, 25652419 + ... + 25653079.

Almost surely, 2^16956467089 is an apocalyptic number.

16956467089 is the 130217-th square number.

16956467089 is the 65109-th centered octagonal number.

It is an amenable number.

16956467089 is a deficient number, since it is larger than the sum of its proper divisors (112332992).

16956467089 is an frugal number, since it uses more digits than its factorization.

16956467089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 16956467089 in words is "sixteen billion, nine hundred fifty-six million, four hundred sixty-seven thousand, eighty-nine".