161369426371 has 4 divisors (see below), whose sum is σ = 161394977952. Its totient is φ = 161343874792.

The previous prime is 161369426353. The next prime is 161369426381. The reversal of 161369426371 is 173624963161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 173624963161 = 13 ⋅13355766397.

It is a cyclic number.

It is not a de Polignac number, because 161369426371 - 2⁹ = 161369425859 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161369426381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12766315 + ... + 12778948.

It is an arithmetic number, because the mean of its divisors is an integer number (40348744488).

Almost surely, 2^161369426371 is an apocalyptic number.

161369426371 is a deficient number, since it is larger than the sum of its proper divisors (25551581).

161369426371 is an equidigital number, since it uses as much as digits as its factorization.

161369426371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25551580.

The product of its digits is 979776, while the sum is 49.

The spelling of 161369426371 in words is "one hundred sixty-one billion, three hundred sixty-nine million, four hundred twenty-six thousand, three hundred seventy-one".