173768360813 has 2 divisors, whose sum is σ = 173768360814. Its totient is φ = 173768360812.

The previous prime is 173768360809. The next prime is 173768360837. The reversal of 173768360813 is 318063867371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116426311369 + 57342049444 = 341213^2 + 239462^2 .

It is a cyclic number.

It is not a de Polignac number, because 173768360813 - 2² = 173768360809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173768360893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86884180406 + 86884180407.

It is an arithmetic number, because the mean of its divisors is an integer number (86884180407).

Almost surely, 2^173768360813 is an apocalyptic number.

It is an amenable number.

173768360813 is a deficient number, since it is larger than the sum of its proper divisors (1).

173768360813 is an equidigital number, since it uses as much as digits as its factorization.

173768360813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 173768360813 in words is "one hundred seventy-three billion, seven hundred sixty-eight million, three hundred sixty thousand, eight hundred thirteen".