171457430393 has 4 divisors (see below), whose sum is σ = 171464230800. Its totient is φ = 171450629988.

The previous prime is 171457430387. The next prime is 171457430413. The reversal of 171457430393 is 393034754171.

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 171457430393 - 2¹⁰ = 171457429369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171457430323) 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, 3362243 + ... + 3412856.

It is an arithmetic number, because the mean of its divisors is an integer number (42866057700).

Almost surely, 2^171457430393 is an apocalyptic number.

It is an amenable number.

171457430393 is a deficient number, since it is larger than the sum of its proper divisors (6800407).

171457430393 is an equidigital number, since it uses as much as digits as its factorization.

171457430393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6800406.

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 171457430393 in words is "one hundred seventy-one billion, four hundred fifty-seven million, four hundred thirty thousand, three hundred ninety-three".