173542107217 has 2 divisors, whose sum is σ = 173542107218. Its totient is φ = 173542107216.

The previous prime is 173542107203. The next prime is 173542107229. The reversal of 173542107217 is 712701245371.

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., 124917006096 + 48625101121 = 353436^2 + 220511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173542107217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 173542107217.

It is not a weakly prime, because it can be changed into another prime (173542107257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86771053608 + 86771053609.

It is an arithmetic number, because the mean of its divisors is an integer number (86771053609).

Almost surely, 2^173542107217 is an apocalyptic number.

It is an amenable number.

173542107217 is a deficient number, since it is larger than the sum of its proper divisors (1).

173542107217 is an equidigital number, since it uses as much as digits as its factorization.

173542107217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 173542107217 in words is "one hundred seventy-three billion, five hundred forty-two million, one hundred seven thousand, two hundred seventeen".