13115511200 has 144 divisors (see below), whose sum is σ = 35522413920. Its totient is φ = 4688256000.

The previous prime is 13115511193. The next prime is 13115511209. The reversal of 13115511200 is 211551131.

It is a happy number.

13115511200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (13115511209) by changing a digit.

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, 506570 + ... + 531830.

It is an arithmetic number, because the mean of its divisors is an integer number (246683430).

Almost surely, 2^13115511200 is an apocalyptic number.

13115511200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13115511200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17761206960).

13115511200 is an abundant number, since it is smaller than the sum of its proper divisors (22406902720).

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

13115511200 is a wasteful number, since it uses less digits than its factorization.

13115511200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25351 (or 25338 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

The spelling of 13115511200 in words is "thirteen billion, one hundred fifteen million, five hundred eleven thousand, two hundred".