97989735251173 has 2 divisors, whose sum is σ = 97989735251174. Its totient is φ = 97989735251172.

The previous prime is 97989735251153. The next prime is 97989735251203. The reversal of 97989735251173 is 37115253798979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95083112617249 + 2906622633924 = 9751057^2 + 1704882^2 .

It is a cyclic number.

It is not a de Polignac number, because 97989735251173 - 2²¹ = 97989733154021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97989735251173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97989735251153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48994867625586 + 48994867625587.

It is an arithmetic number, because the mean of its divisors is an integer number (48994867625587).

Almost surely, 2^{97989735251173} is an apocalyptic number.

It is an amenable number.

97989735251173 is a deficient number, since it is larger than the sum of its proper divisors (1).

97989735251173 is an equidigital number, since it uses as much as digits as its factorization.

97989735251173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900169200, while the sum is 76.

The spelling of 97989735251173 in words is "ninety-seven trillion, nine hundred eighty-nine billion, seven hundred thirty-five million, two hundred fifty-one thousand, one hundred seventy-three".