99998458577 has 2 divisors, whose sum is σ = 99998458578. Its totient is φ = 99998458576.

The previous prime is 99998458489. The next prime is 99998458603. The reversal of 99998458577 is 77585489999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92293832401 + 7704626176 = 303799^2 + 87776^2 .

It is an emirp because it is prime and its reverse (77585489999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99998458577 - 2⁸ = 99998458321 is a prime.

It is not a weakly prime, because it can be changed into another prime (99998458477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999229288 + 49999229289.

It is an arithmetic number, because the mean of its divisors is an integer number (49999229289).

Almost surely, 2^99998458577 is an apocalyptic number.

It is an amenable number.

99998458577 is a deficient number, since it is larger than the sum of its proper divisors (1).

99998458577 is an equidigital number, since it uses as much as digits as its factorization.

99998458577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2057529600, while the sum is 80.

The spelling of 99998458577 in words is "ninety-nine billion, nine hundred ninety-eight million, four hundred fifty-eight thousand, five hundred seventy-seven".