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BaseRepresentation
bin10100001000100011…
…00101011111000001
31000220022022001112201
422010101211133001
5134114114341324
64544325153201
7531601102132
oct120421453701
930808261481
1010809137089
114647526753
122117b5b801
13103351c20a
147477c9c89
15433e3c444
hex2844657c1

10809137089 has 3 divisors (see below), whose sum is σ = 10809241057. Its totient is φ = 10809033122.

The previous prime is 10809137051. The next prime is 10809137093. The reversal of 10809137089 is 98073190801.

The square root of 10809137089 is 103967.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98073190801 = 194950319749.

It is not a de Polignac number, because 10809137089 - 221 = 10807039937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10809137029) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 51984 + ... + 155950.

Almost surely, 210809137089 is an apocalyptic number.

10809137089 is the 103967-th square number.

10809137089 is the 51984-th centered octagonal number.

It is an amenable number.

10809137089 is a deficient number, since it is larger than the sum of its proper divisors (103968).

10809137089 is an frugal number, since it uses more digits than its factorization.

10809137089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207934 (or 103967 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 46.

The spelling of 10809137089 in words is "ten billion, eight hundred nine million, one hundred thirty-seven thousand, eighty-nine".

Divisors: 1 103967 10809137089