170203870073 has 2 divisors, whose sum is σ = 170203870074. Its totient is φ = 170203870072.

The previous prime is 170203870033. The next prime is 170203870087. The reversal of 170203870073 is 370078302071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167863922944 + 2339947129 = 409712^2 + 48373^2 .

It is a cyclic number.

It is not a de Polignac number, because 170203870073 - 2⁶ = 170203870009 is a prime.

It is not a weakly prime, because it can be changed into another prime (170203870033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85101935036 + 85101935037.

It is an arithmetic number, because the mean of its divisors is an integer number (85101935037).

Almost surely, 2^170203870073 is an apocalyptic number.

It is an amenable number.

170203870073 is a deficient number, since it is larger than the sum of its proper divisors (1).

170203870073 is an equidigital number, since it uses as much as digits as its factorization.

170203870073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The spelling of 170203870073 in words is "one hundred seventy billion, two hundred three million, eight hundred seventy thousand, seventy-three".