108398198498 has 18 divisors (see below), whose sum is σ = 171619464609. Its totient is φ = 51342324552.

The previous prime is 108398198483. The next prime is 108398198569. The reversal of 108398198498 is 894891893801.

It can be written as a sum of positive squares in 2 ways, for example, as 108381199369 + 16999129 = 329213^2 + 4123^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=232807.

It is a super-2 number, since 2×108398198498² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 8840540 + ... + 8852792.

Almost surely, 2^108398198498 is an apocalyptic number.

108398198498 is a deficient number, since it is larger than the sum of its proper divisors (63221266111).

108398198498 is an frugal number, since it uses more digits than its factorization.

108398198498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24546 (or 12274 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 68.

The spelling of 108398198498 in words is "one hundred eight billion, three hundred ninety-eight million, one hundred ninety-eight thousand, four hundred ninety-eight".