108261398898 has 36 divisors (see below), whose sum is σ = 241077392010. Its totient is φ = 35111797056.

The previous prime is 108261398879. The next prime is 108261398899. The reversal of 108261398898 is 898893162801.

It is a happy number.

108261398898 is a `hidden beast` number, since 1 + 0 + 8 + 2 + 613 + 9 + 8 + 8 + 9 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 100592368569 + 7669030329 = 317163^2 + 87573^2 .

It is a super-2 number, since 2×108261398898² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108261398899) 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 17 ways as a sum of consecutive naturals, for example, 2172043 + ... + 2221326.

Almost surely, 2^108261398898 is an apocalyptic number.

108261398898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

108261398898 is an abundant number, since it is smaller than the sum of its proper divisors (132815993112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

108261398898 is a wasteful number, since it uses less digits than its factorization.

108261398898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393451 (or 4393411 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 63.

Adding to 108261398898 its sum of digits (63), we get a square (108261398961 = 329031²).

The spelling of 108261398898 in words is "one hundred eight billion, two hundred sixty-one million, three hundred ninety-eight thousand, eight hundred ninety-eight".