169139506319 has 4 divisors (see below), whose sum is σ = 193302292944. Its totient is φ = 144976719696.

The previous prime is 169139506181. The next prime is 169139506321. The reversal of 169139506319 is 913605931961.

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

It is a cyclic number.

It is not a de Polignac number, because 169139506319 - 2³² = 164844539023 is a prime.

It is a super-2 number, since 2×169139506319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169139506519) 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, 12081393302 + ... + 12081393315.

It is an arithmetic number, because the mean of its divisors is an integer number (48325573236).

Almost surely, 2^169139506319 is an apocalyptic number.

169139506319 is a deficient number, since it is larger than the sum of its proper divisors (24162786625).

169139506319 is an equidigital number, since it uses as much as digits as its factorization.

169139506319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24162786624.

The product of its (nonzero) digits is 1180980, while the sum is 53.

The spelling of 169139506319 in words is "one hundred sixty-nine billion, one hundred thirty-nine million, five hundred six thousand, three hundred nineteen".