99831013898 has 64 divisors (see below), whose sum is σ = 195698764800. Its totient is φ = 37063958400.

The previous prime is 99831013813. The next prime is 99831013901. The reversal of 99831013898 is 89831013899.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 87653 + ... + 455351.

It is an arithmetic number, because the mean of its divisors is an integer number (3057793200).

Almost surely, 2^99831013898 is an apocalyptic number.

99831013898 is a deficient number, since it is larger than the sum of its proper divisors (95867750902).

99831013898 is a wasteful number, since it uses less digits than its factorization.

99831013898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367803.

The product of its (nonzero) digits is 3359232, while the sum is 59.

Subtracting from 99831013898 its reverse (89831013899), we obtain a palindrome (9999999999).

The spelling of 99831013898 in words is "ninety-nine billion, eight hundred thirty-one million, thirteen thousand, eight hundred ninety-eight".