171373561057 has 4 divisors (see below), whose sum is σ = 173542846720. Its totient is φ = 169204275396.

The previous prime is 171373561049. The next prime is 171373561067. The reversal of 171373561057 is 750165373171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 171373561057 - 2³ = 171373561049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171373560998 and 171373561016.

It is not an unprimeable number, because it can be changed into a prime (171373561027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084642713 + ... + 1084642870.

It is an arithmetic number, because the mean of its divisors is an integer number (43385711680).

Almost surely, 2^171373561057 is an apocalyptic number.

It is an amenable number.

171373561057 is a deficient number, since it is larger than the sum of its proper divisors (2169285663).

171373561057 is an equidigital number, since it uses as much as digits as its factorization.

171373561057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169285662.

The product of its (nonzero) digits is 463050, while the sum is 46.

The spelling of 171373561057 in words is "one hundred seventy-one billion, three hundred seventy-three million, five hundred sixty-one thousand, fifty-seven".