99998168451 has 16 divisors (see below), whose sum is σ = 141388156800. Its totient is φ = 62648716928.

The previous prime is 99998168399. The next prime is 99998168453. The reversal of 99998168451 is 15486189999.

It is a cyclic number.

It is not a de Polignac number, because 99998168451 - 2⁹ = 99998167939 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (99998168453) 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 in 15 ways as a sum of consecutive naturals, for example, 1454061 + ... + 1521278.

It is an arithmetic number, because the mean of its divisors is an integer number (8836759800).

Almost surely, 2^99998168451 is an apocalyptic number.

99998168451 is a deficient number, since it is larger than the sum of its proper divisors (41389988349).

99998168451 is a wasteful number, since it uses less digits than its factorization.

99998168451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976018.

The product of its digits is 50388480, while the sum is 69.

The spelling of 99998168451 in words is "ninety-nine billion, nine hundred ninety-eight million, one hundred sixty-eight thousand, four hundred fifty-one".