13205115340000 has 120 divisors (see below), whose sum is σ = 32944125292848. Its totient is φ = 5207650560000.

The previous prime is 13205115339991. The next prime is 13205115340061. The reversal of 13205115340000 is 4351150231.

It is a happy number.

It is a super-2 number, since 2×13205115340000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3229689 + ... + 6069688.

Almost surely, 2^{13205115340000} is an apocalyptic number.

13205115340000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13205115340000 is an abundant number, since it is smaller than the sum of its proper divisors (19739009952848).

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

13205115340000 is an frugal number, since it uses more digits than its factorization.

13205115340000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9299478 (or 9299455 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 13205115340000 its reverse (4351150231), we get a palindrome (13209466490231).

The spelling of 13205115340000 in words is "thirteen trillion, two hundred five billion, one hundred fifteen million, three hundred forty thousand".