97769968692857 has 2 divisors, whose sum is σ = 97769968692858. Its totient is φ = 97769968692856.

The previous prime is 97769968692679. The next prime is 97769968692889. The reversal of 97769968692857 is 75829686996779.

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., 68385936837241 + 29384031855616 = 8269579^2 + 5420704^2 .

It is an emirp because it is prime and its reverse (75829686996779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97769968692857 - 2¹² = 97769968688761 is a prime.

It is not a weakly prime, because it can be changed into another prime (97769968662857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48884984346428 + 48884984346429.

It is an arithmetic number, because the mean of its divisors is an integer number (48884984346429).

Almost surely, 2^{97769968692857} is an apocalyptic number.

It is an amenable number.

97769968692857 is a deficient number, since it is larger than the sum of its proper divisors (1).

97769968692857 is an equidigital number, since it uses as much as digits as its factorization.

97769968692857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311098475520, while the sum is 98.

The spelling of 97769968692857 in words is "ninety-seven trillion, seven hundred sixty-nine billion, nine hundred sixty-eight million, six hundred ninety-two thousand, eight hundred fifty-seven".