13251331534220 has 48 divisors (see below), whose sum is σ = 29984161592448. Its totient is φ = 4890225350400.

The previous prime is 13251331534187. The next prime is 13251331534237. The reversal of 13251331534220 is 2243513315231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12910964 + ... + 13899483.

It is an arithmetic number, because the mean of its divisors is an integer number (624670033176).

Almost surely, 2^{13251331534220} is an apocalyptic number.

13251331534220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13251331534220 is an abundant number, since it is smaller than the sum of its proper divisors (16732830058228).

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

13251331534220 is a wasteful number, since it uses less digits than its factorization.

13251331534220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26812370 (or 26812368 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 13251331534220 its reverse (2243513315231), we get a palindrome (15494844849451).

The spelling of 13251331534220 in words is "thirteen trillion, two hundred fifty-one billion, three hundred thirty-one million, five hundred thirty-four thousand, two hundred twenty".