17128105081 has 8 divisors (see below), whose sum is σ = 18137220840. Its totient is φ = 16119164928.

The previous prime is 17128105061. The next prime is 17128105097. The reversal of 17128105081 is 18050182171.

It can be written as a sum of positive squares in 4 ways, for example, as 14596505856 + 2531599225 = 120816^2 + 50315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17128105081 is a prime.

It is a super-2 number, since 2×17128105081² (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 (17128105021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193705 + ... + 267913.

It is an arithmetic number, because the mean of its divisors is an integer number (2267152605).

Almost surely, 2^17128105081 is an apocalyptic number.

It is an amenable number.

17128105081 is a deficient number, since it is larger than the sum of its proper divisors (1009115759).

17128105081 is a wasteful number, since it uses less digits than its factorization.

17128105081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87803.

The product of its (nonzero) digits is 4480, while the sum is 34.

The spelling of 17128105081 in words is "seventeen billion, one hundred twenty-eight million, one hundred five thousand, eighty-one".