13205540146220 has 24 divisors (see below), whose sum is σ = 27731801614608. Its totient is φ = 5282184190400.

The previous prime is 13205540146187. The next prime is 13205540146261. The reversal of 13205540146220 is 2264104550231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1560710 + ... + 5370930.

It is an arithmetic number, because the mean of its divisors is an integer number (1155491733942).

Almost surely, 2^{13205540146220} is an apocalyptic number.

13205540146220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13205540146220 is an abundant number, since it is smaller than the sum of its proper divisors (14526261468388).

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

13205540146220 is a wasteful number, since it uses less digits than its factorization.

13205540146220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983521 (or 3983519 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 13205540146220 its reverse (2264104550231), we get a palindrome (15469644696451).

The spelling of 13205540146220 in words is "thirteen trillion, two hundred five billion, five hundred forty million, one hundred forty-six thousand, two hundred twenty".