170943370993 has 4 divisors (see below), whose sum is σ = 170950489060. Its totient is φ = 170936252928.

The previous prime is 170943370967. The next prime is 170943371057. The reversal of 170943370993 is 399073349071.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154663652529 + 16279718464 = 393273^2 + 127592^2 .

It is a cyclic number.

It is not a de Polignac number, because 170943370993 - 2¹⁷ = 170943239921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170943370903) 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, 3522888 + ... + 3571081.

It is an arithmetic number, because the mean of its divisors is an integer number (42737622265).

Almost surely, 2^170943370993 is an apocalyptic number.

It is an amenable number.

170943370993 is a deficient number, since it is larger than the sum of its proper divisors (7118067).

170943370993 is an equidigital number, since it uses as much as digits as its factorization.

170943370993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7118066.

The product of its (nonzero) digits is 3857868, while the sum is 55.

The spelling of 170943370993 in words is "one hundred seventy billion, nine hundred forty-three million, three hundred seventy thousand, nine hundred ninety-three".