171057385013 has 2 divisors, whose sum is σ = 171057385014. Its totient is φ = 171057385012.

The previous prime is 171057384941. The next prime is 171057385049. The reversal of 171057385013 is 310583750171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128753945329 + 42303439684 = 358823^2 + 205678^2 .

It is a cyclic number.

It is not a de Polignac number, because 171057385013 - 2³⁴ = 153877515829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171057385613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85528692506 + 85528692507.

It is an arithmetic number, because the mean of its divisors is an integer number (85528692507).

Almost surely, 2^171057385013 is an apocalyptic number.

It is an amenable number.

171057385013 is a deficient number, since it is larger than the sum of its proper divisors (1).

171057385013 is an equidigital number, since it uses as much as digits as its factorization.

171057385013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 171057385013 in words is "one hundred seventy-one billion, fifty-seven million, three hundred eighty-five thousand, thirteen".