167591087273 has 2 divisors, whose sum is σ = 167591087274. Its totient is φ = 167591087272.

The previous prime is 167591087221. The next prime is 167591087291. The reversal of 167591087273 is 372780195761.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137427386944 + 30163700329 = 370712^2 + 173677^2 .

It is a cyclic number.

It is not a de Polignac number, because 167591087273 - 2²⁰ = 167590038697 is a prime.

It is not a weakly prime, because it can be changed into another prime (167591087173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83795543636 + 83795543637.

It is an arithmetic number, because the mean of its divisors is an integer number (83795543637).

Almost surely, 2^167591087273 is an apocalyptic number.

It is an amenable number.

167591087273 is a deficient number, since it is larger than the sum of its proper divisors (1).

167591087273 is an equidigital number, since it uses as much as digits as its factorization.

167591087273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4445280, while the sum is 56.

The spelling of 167591087273 in words is "one hundred sixty-seven billion, five hundred ninety-one million, eighty-seven thousand, two hundred seventy-three".