13011133050 has 72 divisors (see below), whose sum is σ = 34989770556. Its totient is φ = 3466341120.

The previous prime is 13011133013. The next prime is 13011133103. The reversal of 13011133050 is 5033111031.

It can be written as a sum of positive squares in 6 ways, for example, as 2690808129 + 10320324921 = 51873^2 + 101589^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 480472 + ... + 506828.

Almost surely, 2^13011133050 is an apocalyptic number.

13011133050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13011133050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17494885278).

13011133050 is an abundant number, since it is smaller than the sum of its proper divisors (21978637506).

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

13011133050 is a wasteful number, since it uses less digits than its factorization.

13011133050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27472 (or 27464 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

Adding to 13011133050 its reverse (5033111031), we get a palindrome (18044244081).

The spelling of 13011133050 in words is "thirteen billion, eleven million, one hundred thirty-three thousand, fifty".