12098261808 has 60 divisors (see below), whose sum is σ = 34124982528. Its totient is φ = 4000993920.

The previous prime is 12098261807. The next prime is 12098261831. The reversal of 12098261808 is 80816289021.

It is a happy number.

12098261808 is a `hidden beast` number, since 1 + 20 + 9 + 8 + 2 + 618 + 0 + 8 = 666.

It is a super-2 number, since 2×12098261808² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12098261807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312483 + ... + 349058.

Almost surely, 2^12098261808 is an apocalyptic number.

12098261808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12098261808 is an abundant number, since it is smaller than the sum of its proper divisors (22026720720).

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

12098261808 is a wasteful number, since it uses less digits than its factorization.

12098261808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661682 (or 661673 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 12098261808 in words is "twelve billion, ninety-eight million, two hundred sixty-one thousand, eight hundred eight".