13231649898 has 48 divisors (see below), whose sum is σ = 29930472000. Its totient is φ = 4216610112.

The previous prime is 13231649867. The next prime is 13231649941. The reversal of 13231649898 is 89894613231.

13231649898 is a `hidden beast` number, since 1 + 32 + 31 + 6 + 498 + 98 = 666.

13231649898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 921478 + ... + 935726.

It is an arithmetic number, because the mean of its divisors is an integer number (623551500).

Almost surely, 2^13231649898 is an apocalyptic number.

13231649898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13231649898 is an abundant number, since it is smaller than the sum of its proper divisors (16698822102).

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

13231649898 is a wasteful number, since it uses less digits than its factorization.

13231649898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16523 (or 16520 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 13231649898 in words is "thirteen billion, two hundred thirty-one million, six hundred forty-nine thousand, eight hundred ninety-eight".