13511233040 has 40 divisors (see below), whose sum is σ = 31578121728. Its totient is φ = 5376191360.

The previous prime is 13511233039. The next prime is 13511233061. The reversal of 13511233040 is 4033211531.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×13511233040² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13511232997 and 13511233015.

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 7 ways as a sum of consecutive naturals, for example, 426842 + ... + 457401.

Almost surely, 2^13511233040 is an apocalyptic number.

13511233040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13511233040 is an abundant number, since it is smaller than the sum of its proper divisors (18066888688).

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

13511233040 is a wasteful number, since it uses less digits than its factorization.

13511233040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884447 (or 884441 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 13511233040 its reverse (4033211531), we get a palindrome (17544444571).

The spelling of 13511233040 in words is "thirteen billion, five hundred eleven million, two hundred thirty-three thousand, forty".