171442880551 has 2 divisors, whose sum is σ = 171442880552. Its totient is φ = 171442880550.

The previous prime is 171442880489. The next prime is 171442880573. The reversal of 171442880551 is 155088244171.

171442880551 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 is a cyclic number.

It is not a de Polignac number, because 171442880551 - 2³⁷ = 34003927079 is a prime.

It is a super-2 number, since 2×171442880551² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171442889551) 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, 85721440275 + 85721440276.

It is an arithmetic number, because the mean of its divisors is an integer number (85721440276).

Almost surely, 2^171442880551 is an apocalyptic number.

171442880551 is a deficient number, since it is larger than the sum of its proper divisors (1).

171442880551 is an equidigital number, since it uses as much as digits as its factorization.

171442880551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 358400, while the sum is 46.

The spelling of 171442880551 in words is "one hundred seventy-one billion, four hundred forty-two million, eight hundred eighty thousand, five hundred fifty-one".