169336271993 has 4 divisors (see below), whose sum is σ = 193527168000. Its totient is φ = 145145375988.

The previous prime is 169336271989. The next prime is 169336272023. The reversal of 169336271993 is 399172633961.

It is a happy number.

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 169336271993 - 2² = 169336271989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169336271393) 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, 12095447993 + ... + 12095448006.

It is an arithmetic number, because the mean of its divisors is an integer number (48381792000).

Almost surely, 2^169336271993 is an apocalyptic number.

It is an amenable number.

169336271993 is a deficient number, since it is larger than the sum of its proper divisors (24190896007).

169336271993 is an equidigital number, since it uses as much as digits as its factorization.

169336271993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24190896006.

The product of its digits is 9920232, while the sum is 59.

The spelling of 169336271993 in words is "one hundred sixty-nine billion, three hundred thirty-six million, two hundred seventy-one thousand, nine hundred ninety-three".