98999819378 has 16 divisors (see below), whose sum is σ = 152587757400. Its totient is φ = 48138541056.

The previous prime is 98999819377. The next prime is 98999819389. The reversal of 98999819378 is 87391899989.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 94662674929 + 4337144449 = 307673^2 + 65857^2 .

It is not an unprimeable number, because it can be changed into a prime (98999819377) 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 7 ways as a sum of consecutive naturals, for example, 173903 + ... + 477746.

Almost surely, 2^98999819378 is an apocalyptic number.

98999819378 is a deficient number, since it is larger than the sum of its proper divisors (53587938022).

98999819378 is a wasteful number, since it uses less digits than its factorization.

98999819378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653741.

The product of its digits is 634894848, while the sum is 80.

The spelling of 98999819378 in words is "ninety-eight billion, nine hundred ninety-nine million, eight hundred nineteen thousand, three hundred seventy-eight".