170042526989 has 2 divisors, whose sum is σ = 170042526990. Its totient is φ = 170042526988.

The previous prime is 170042526971. The next prime is 170042526991. The reversal of 170042526989 is 989625240071.

170042526989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122453104489 + 47589422500 = 349933^2 + 218150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170042526989 is a prime.

It is a super-2 number, since 2×170042526989² (a number of 23 digits) contains 22 as substring.

Together with 170042526991, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 170042526989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170042526389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85021263494 + 85021263495.

It is an arithmetic number, because the mean of its divisors is an integer number (85021263495).

Almost surely, 2^170042526989 is an apocalyptic number.

It is an amenable number.

170042526989 is a deficient number, since it is larger than the sum of its proper divisors (1).

170042526989 is an equidigital number, since it uses as much as digits as its factorization.

170042526989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 170042526989 in words is "one hundred seventy billion, forty-two million, five hundred twenty-six thousand, nine hundred eighty-nine".