169121373169 has 4 divisors (see below), whose sum is σ = 193281569344. Its totient is φ = 144961176996.

The previous prime is 169121373131. The next prime is 169121373193. The reversal of 169121373169 is 961373121961.

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 169121373169 - 2²³ = 169112984561 is a prime.

It is a super-2 number, since 2×169121373169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169121373199) 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, 12080098077 + ... + 12080098090.

It is an arithmetic number, because the mean of its divisors is an integer number (48320392336).

Almost surely, 2^169121373169 is an apocalyptic number.

It is an amenable number.

169121373169 is a deficient number, since it is larger than the sum of its proper divisors (24160196175).

169121373169 is an equidigital number, since it uses as much as digits as its factorization.

169121373169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24160196174.

The product of its digits is 367416, while the sum is 49.

The spelling of 169121373169 in words is "one hundred sixty-nine billion, one hundred twenty-one million, three hundred seventy-three thousand, one hundred sixty-nine".