171157688886433 has 2 divisors, whose sum is σ = 171157688886434. Its totient is φ = 171157688886432.

The previous prime is 171157688886407. The next prime is 171157688886449. The reversal of 171157688886433 is 334688886751171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132446308795024 + 38711380091409 = 11508532^2 + 6221847^2 .

It is a cyclic number.

It is not a de Polignac number, because 171157688886433 - 2⁴⁵ = 135973316797601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171157688886433.

It is not a weakly prime, because it can be changed into another prime (171157688856433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85578844443216 + 85578844443217.

It is an arithmetic number, because the mean of its divisors is an integer number (85578844443217).

Almost surely, 2^{171157688886433} is an apocalyptic number.

It is an amenable number.

171157688886433 is a deficient number, since it is larger than the sum of its proper divisors (1).

171157688886433 is an equidigital number, since it uses as much as digits as its factorization.

171157688886433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1300561920, while the sum is 76.

The spelling of 171157688886433 in words is "one hundred seventy-one trillion, one hundred fifty-seven billion, six hundred eighty-eight million, eight hundred eighty-six thousand, four hundred thirty-three".