869506050173 has 2 divisors, whose sum is σ = 869506050174. Its totient is φ = 869506050172.

The previous prime is 869506050131. The next prime is 869506050197. The reversal of 869506050173 is 371050605968.

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., 856193044249 + 13313005924 = 925307^2 + 115382^2 .

It is a cyclic number.

It is not a de Polignac number, because 869506050173 - 2¹⁸ = 869505788029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869506050073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434753025086 + 434753025087.

It is an arithmetic number, because the mean of its divisors is an integer number (434753025087).

Almost surely, 2^869506050173 is an apocalyptic number.

It is an amenable number.

869506050173 is a deficient number, since it is larger than the sum of its proper divisors (1).

869506050173 is an equidigital number, since it uses as much as digits as its factorization.

869506050173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 869506050173 in words is "eight hundred sixty-nine billion, five hundred six million, fifty thousand, one hundred seventy-three".