99291773587 has 2 divisors, whose sum is σ = 99291773588. Its totient is φ = 99291773586.

The previous prime is 99291773551. The next prime is 99291773597. The reversal of 99291773587 is 78537719299.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99291773587 is a prime.

It is not a weakly prime, because it can be changed into another prime (99291773597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49645886793 + 49645886794.

It is an arithmetic number, because the mean of its divisors is an integer number (49645886794).

Almost surely, 2^99291773587 is an apocalyptic number.

99291773587 is a deficient number, since it is larger than the sum of its proper divisors (1).

99291773587 is an equidigital number, since it uses as much as digits as its factorization.

99291773587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60011280, while the sum is 67.

The spelling of 99291773587 in words is "ninety-nine billion, two hundred ninety-one million, seven hundred seventy-three thousand, five hundred eighty-seven".