171253152311987 has 2 divisors, whose sum is σ = 171253152311988. Its totient is φ = 171253152311986.

The previous prime is 171253152311951. The next prime is 171253152312007. The reversal of 171253152311987 is 789113251352171.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171253152311987 - 2²⁴ = 171253135534771 is a prime.

It is not a weakly prime, because it can be changed into another prime (171253152311287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85626576155993 + 85626576155994.

It is an arithmetic number, because the mean of its divisors is an integer number (85626576155994).

Almost surely, 2^{171253152311987} is an apocalyptic number.

171253152311987 is a deficient number, since it is larger than the sum of its proper divisors (1).

171253152311987 is an equidigital number, since it uses as much as digits as its factorization.

171253152311987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 56.

The spelling of 171253152311987 in words is "one hundred seventy-one trillion, two hundred fifty-three billion, one hundred fifty-two million, three hundred eleven thousand, nine hundred eighty-seven".