161842452268061 has 4 divisors (see below), whose sum is σ = 161847659752800. Its totient is φ = 161837244783324.

The previous prime is 161842452267997. The next prime is 161842452268073. The reversal of 161842452268061 is 160862254248161.

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 161842452268061 - 2⁶ = 161842452267997 is a prime.

It is a super-2 number, since 2×161842452268061² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161842452267988 and 161842452268006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161842452268961) 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, 2603695751 + ... + 2603757908.

It is an arithmetic number, because the mean of its divisors is an integer number (40461914938200).

Almost surely, 2^{161842452268061} is an apocalyptic number.

It is an amenable number.

161842452268061 is a deficient number, since it is larger than the sum of its proper divisors (5207484739).

161842452268061 is an equidigital number, since it uses as much as digits as its factorization.

161842452268061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207484738.

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 161842452268061 in words is "one hundred sixty-one trillion, eight hundred forty-two billion, four hundred fifty-two million, two hundred sixty-eight thousand, sixty-one".