97189555221673 has 2 divisors, whose sum is σ = 97189555221674. Its totient is φ = 97189555221672.

The previous prime is 97189555221641. The next prime is 97189555221713. The reversal of 97189555221673 is 37612255598179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89186359485609 + 8003195736064 = 9443853^2 + 2828992^2 .

It is a cyclic number.

It is not a de Polignac number, because 97189555221673 - 2⁵ = 97189555221641 is a prime.

It is not a weakly prime, because it can be changed into another prime (97189555227673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48594777610836 + 48594777610837.

It is an arithmetic number, because the mean of its divisors is an integer number (48594777610837).

Almost surely, 2^{97189555221673} is an apocalyptic number.

It is an amenable number.

97189555221673 is a deficient number, since it is larger than the sum of its proper divisors (1).

97189555221673 is an equidigital number, since it uses as much as digits as its factorization.

97189555221673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768000, while the sum is 70.

The spelling of 97189555221673 in words is "ninety-seven trillion, one hundred eighty-nine billion, five hundred fifty-five million, two hundred twenty-one thousand, six hundred seventy-three".