97185544693 has 2 divisors, whose sum is σ = 97185544694. Its totient is φ = 97185544692.

The previous prime is 97185544669. The next prime is 97185544723. The reversal of 97185544693 is 39644558179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48718201284 + 48467343409 = 220722^2 + 220153^2 .

It is an emirp because it is prime and its reverse (39644558179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97185544693 - 2⁵ = 97185544661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97185524693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48592772346 + 48592772347.

It is an arithmetic number, because the mean of its divisors is an integer number (48592772347).

Almost surely, 2^97185544693 is an apocalyptic number.

It is an amenable number.

97185544693 is a deficient number, since it is larger than the sum of its proper divisors (1).

97185544693 is an equidigital number, since it uses as much as digits as its factorization.

97185544693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 61.

The spelling of 97185544693 in words is "ninety-seven billion, one hundred eighty-five million, five hundred forty-four thousand, six hundred ninety-three".