13358881215816 has 32 divisors (see below), whose sum is σ = 33399276950400. Its totient is φ = 4452683883840.

The previous prime is 13358881215809. The next prime is 13358881215829. The reversal of 13358881215816 is 61851218885331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13358881215816.

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, 16887871 + ... + 17661198.

It is an arithmetic number, because the mean of its divisors is an integer number (1043727404700).

Almost surely, 2^{13358881215816} is an apocalyptic number.

It is an amenable number.

13358881215816 is an abundant number, since it is smaller than the sum of its proper divisors (20040395734584).

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

13358881215816 is a wasteful number, since it uses less digits than its factorization.

13358881215816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34565189 (or 34565185 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 60.

The spelling of 13358881215816 in words is "thirteen trillion, three hundred fifty-eight billion, eight hundred eighty-one million, two hundred fifteen thousand, eight hundred sixteen".