161338825823 has 8 divisors (see below), whose sum is σ = 190745410080. Its totient is φ = 133521786720.

The previous prime is 161338825799. The next prime is 161338825829. The reversal of 161338825823 is 328528833161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161338825823 - 2⁶ = 161338825759 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 (161338825829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397386068 + ... + 397386473.

It is an arithmetic number, because the mean of its divisors is an integer number (23843176260).

Almost surely, 2^161338825823 is an apocalyptic number.

161338825823 is a deficient number, since it is larger than the sum of its proper divisors (29406584257).

161338825823 is an equidigital number, since it uses as much as digits as its factorization.

161338825823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794772577.

The product of its digits is 1658880, while the sum is 50.

The spelling of 161338825823 in words is "one hundred sixty-one billion, three hundred thirty-eight million, eight hundred twenty-five thousand, eight hundred twenty-three".