99999998573 has 2 divisors, whose sum is σ = 99999998574. Its totient is φ = 99999998572.

The previous prime is 99999998513. The next prime is 99999998591. The reversal of 99999998573 is 37589999999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51618476809 + 48381521764 = 227197^2 + 219958^2 .

It is a cyclic number.

It is not a de Polignac number, because 99999998573 - 2⁶ = 99999998509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99999998513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999999286 + 49999999287.

It is an arithmetic number, because the mean of its divisors is an integer number (49999999287).

Almost surely, 2^99999998573 is an apocalyptic number.

It is an amenable number.

99999998573 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999998573 is an equidigital number, since it uses as much as digits as its factorization.

99999998573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4017693960, while the sum is 86.

The spelling of 99999998573 in words is "ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, five hundred seventy-three".