169342666543 has 4 divisors (see below), whose sum is σ = 169344652968. Its totient is φ = 169340680120.

The previous prime is 169342666511. The next prime is 169342666547. The reversal of 169342666543 is 345666243961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345666243961 = 15551 ⋅22227911.

It is a cyclic number.

It is not a de Polignac number, because 169342666543 - 2⁵ = 169342666511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169342666547) 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, 859321 + ... + 1037842.

It is an arithmetic number, because the mean of its divisors is an integer number (42336163242).

Almost surely, 2^169342666543 is an apocalyptic number.

169342666543 is a deficient number, since it is larger than the sum of its proper divisors (1986425).

169342666543 is an equidigital number, since it uses as much as digits as its factorization.

169342666543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986424.

The product of its digits is 16796160, while the sum is 55.

The spelling of 169342666543 in words is "one hundred sixty-nine billion, three hundred forty-two million, six hundred sixty-six thousand, five hundred forty-three".