2660120173 has 2 divisors, whose sum is σ = 2660120174. Its totient is φ = 2660120172.

The previous prime is 2660120171. The next prime is 2660120179. The reversal of 2660120173 is 3710210662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2500300009 + 159820164 = 50003^2 + 12642^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660120173 - 2¹ = 2660120171 is a prime.

Together with 2660120171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660120171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330060086 + 1330060087.

It is an arithmetic number, because the mean of its divisors is an integer number (1330060087).

Almost surely, 2^2660120173 is an apocalyptic number.

It is an amenable number.

2660120173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660120173 is an equidigital number, since it uses as much as digits as its factorization.

2660120173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2660120173 is about 51576.3528470170. The cubic root of 2660120173 is about 1385.5868475383.

The spelling of 2660120173 in words is "two billion, six hundred sixty million, one hundred twenty thousand, one hundred seventy-three".