13305236611640 has 64 divisors (see below), whose sum is σ = 29950327834560. Its totient is φ = 5319687260160.

The previous prime is 13305236611577. The next prime is 13305236611643. The reversal of 13305236611640 is 4611663250331.

It is a super-3 number, since 3×13305236611640³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13305236611643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1287639914 + ... + 1287650246.

It is an arithmetic number, because the mean of its divisors is an integer number (467973872415).

Almost surely, 2^{13305236611640} is an apocalyptic number.

13305236611640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13305236611640 is an abundant number, since it is smaller than the sum of its proper divisors (16645091222920).

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

13305236611640 is a wasteful number, since it uses less digits than its factorization.

13305236611640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21792 (or 21788 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

Adding to 13305236611640 its reverse (4611663250331), we get a palindrome (17916899861971).

The spelling of 13305236611640 in words is "thirteen trillion, three hundred five billion, two hundred thirty-six million, six hundred eleven thousand, six hundred forty".