167701673681 has 2 divisors, whose sum is σ = 167701673682. Its totient is φ = 167701673680.

The previous prime is 167701673609. The next prime is 167701673683. The reversal of 167701673681 is 186376107761.

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., 122069878225 + 45631795456 = 349385^2 + 213616^2 .

It is a cyclic number.

It is not a de Polignac number, because 167701673681 - 2¹⁴ = 167701657297 is a prime.

It is a super-2 number, since 2×167701673681² (a number of 23 digits) contains 22 as substring.

Together with 167701673683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (167701673683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83850836840 + 83850836841.

It is an arithmetic number, because the mean of its divisors is an integer number (83850836841).

Almost surely, 2^167701673681 is an apocalyptic number.

It is an amenable number.

167701673681 is a deficient number, since it is larger than the sum of its proper divisors (1).

167701673681 is an equidigital number, since it uses as much as digits as its factorization.

167701673681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 167701673681 in words is "one hundred sixty-seven billion, seven hundred one million, six hundred seventy-three thousand, six hundred eighty-one".