84572966173 has 2 divisors, whose sum is σ = 84572966174. Its totient is φ = 84572966172.

The previous prime is 84572966167. The next prime is 84572966213. The reversal of 84572966173 is 37166927548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75954257604 + 8618708569 = 275598^2 + 92837^2 .

It is a cyclic number.

It is not a de Polignac number, because 84572966173 - 2²¹ = 84570869021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84572966123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42286483086 + 42286483087.

It is an arithmetic number, because the mean of its divisors is an integer number (42286483087).

Almost surely, 2^84572966173 is an apocalyptic number.

It is an amenable number.

84572966173 is a deficient number, since it is larger than the sum of its proper divisors (1).

84572966173 is an equidigital number, since it uses as much as digits as its factorization.

84572966173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 58.

The spelling of 84572966173 in words is "eighty-four billion, five hundred seventy-two million, nine hundred sixty-six thousand, one hundred seventy-three".