97822009854689 has 2 divisors, whose sum is σ = 97822009854690. Its totient is φ = 97822009854688.

The previous prime is 97822009854671. The next prime is 97822009854749. The reversal of 97822009854689 is 98645890022879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80312873445025 + 17509136409664 = 8961745^2 + 4184392^2 .

It is a cyclic number.

It is not a de Polignac number, because 97822009854689 - 2²⁰ = 97822008806113 is a prime.

It is a super-2 number, since 2×97822009854689² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97822009854619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48911004927344 + 48911004927345.

It is an arithmetic number, because the mean of its divisors is an integer number (48911004927345).

Almost surely, 2^{97822009854689} is an apocalyptic number.

It is an amenable number.

97822009854689 is a deficient number, since it is larger than the sum of its proper divisors (1).

97822009854689 is an equidigital number, since it uses as much as digits as its factorization.

97822009854689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1254113280, while the sum is 77.

The spelling of 97822009854689 in words is "ninety-seven trillion, eight hundred twenty-two billion, nine million, eight hundred fifty-four thousand, six hundred eighty-nine".