17057987081 has 2 divisors, whose sum is σ = 17057987082. Its totient is φ = 17057987080.

The previous prime is 17057987071. The next prime is 17057987083. The reversal of 17057987081 is 18078975071.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9313987081 + 7744000000 = 96509^2 + 88000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17057987081 is a prime.

It is a super-2 number, since 2×17057987081² (a number of 21 digits) contains 22 as substring.

Together with 17057987083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17057987083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8528993540 + 8528993541.

It is an arithmetic number, because the mean of its divisors is an integer number (8528993541).

Almost surely, 2^17057987081 is an apocalyptic number.

It is an amenable number.

17057987081 is a deficient number, since it is larger than the sum of its proper divisors (1).

17057987081 is an equidigital number, since it uses as much as digits as its factorization.

17057987081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 53.

The spelling of 17057987081 in words is "seventeen billion, fifty-seven million, nine hundred eighty-seven thousand, eighty-one".