99291773597 has 2 divisors, whose sum is σ = 99291773598. Its totient is φ = 99291773596.

The previous prime is 99291773587. The next prime is 99291773611. The reversal of 99291773597 is 79537719299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78009048601 + 21282724996 = 279301^2 + 145886^2 .

It is a cyclic number.

It is not a de Polignac number, because 99291773597 - 2⁶ = 99291773533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99291773587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49645886798 + 49645886799.

It is an arithmetic number, because the mean of its divisors is an integer number (49645886799).

Almost surely, 2^99291773597 is an apocalyptic number.

It is an amenable number.

99291773597 is a deficient number, since it is larger than the sum of its proper divisors (1).

99291773597 is an equidigital number, since it uses as much as digits as its factorization.

99291773597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67512690, while the sum is 68.

The spelling of 99291773597 in words is "ninety-nine billion, two hundred ninety-one million, seven hundred seventy-three thousand, five hundred ninety-seven".