180472336071161 has 4 divisors (see below), whose sum is σ = 183877474487652. Its totient is φ = 177067197654672.

The previous prime is 180472336071151. The next prime is 180472336071197. The reversal of 180472336071161 is 161170633274081.

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

It can be written as a sum of positive squares in 2 ways, for example, as 163036124473600 + 17436211597561 = 12768560^2 + 4175669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180472336071161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180472336071151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702569208166 + ... + 1702569208271.

It is an arithmetic number, because the mean of its divisors is an integer number (45969368621913).

Almost surely, 2^{180472336071161} is an apocalyptic number.

It is an amenable number.

180472336071161 is a deficient number, since it is larger than the sum of its proper divisors (3405138416491).

180472336071161 is an equidigital number, since it uses as much as digits as its factorization.

180472336071161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405138416490.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 180472336071161 in words is "one hundred eighty trillion, four hundred seventy-two billion, three hundred thirty-six million, seventy-one thousand, one hundred sixty-one".