161207141673 has 4 divisors (see below), whose sum is σ = 214942855568. Its totient is φ = 107471427780.

The previous prime is 161207141671. The next prime is 161207141713. The reversal of 161207141673 is 376141702161.

It is a happy number.

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 not a de Polignac number, because 161207141673 - 2¹ = 161207141671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161207141671) 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, 26867856943 + ... + 26867856948.

It is an arithmetic number, because the mean of its divisors is an integer number (53735713892).

Almost surely, 2^161207141673 is an apocalyptic number.

It is an amenable number.

161207141673 is a deficient number, since it is larger than the sum of its proper divisors (53735713895).

161207141673 is an equidigital number, since it uses as much as digits as its factorization.

161207141673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53735713894.

The product of its (nonzero) digits is 42336, while the sum is 39.

The spelling of 161207141673 in words is "one hundred sixty-one billion, two hundred seven million, one hundred forty-one thousand, six hundred seventy-three".