13199155236 has 108 divisors (see below), whose sum is σ = 34745803092. Its totient is φ = 4224530688.

The previous prime is 13199155097. The next prime is 13199155243. The reversal of 13199155236 is 63255199131.

13199155236 is a `hidden beast` number, since 1 + 3 + 1 + 9 + 91 + 552 + 3 + 6 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 5425206336 + 7773948900 = 73656^2 + 88170^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13199155191 and 13199155200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5963266 + ... + 5965478.

It is an arithmetic number, because the mean of its divisors is an integer number (321720399).

Almost surely, 2^13199155236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13199155236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17372901546).

13199155236 is an abundant number, since it is smaller than the sum of its proper divisors (21546647856).

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

13199155236 is a wasteful number, since it uses less digits than its factorization.

13199155236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478 (or 2444 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The spelling of 13199155236 in words is "thirteen billion, one hundred ninety-nine million, one hundred fifty-five thousand, two hundred thirty-six".