13161509489280 has 128 divisors (see below), whose sum is σ = 42107118739200. Its totient is φ = 3496784670720.

The previous prime is 13161509489257. The next prime is 13161509489291. The reversal of 13161509489280 is 8298490516131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 13161509489280.

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, 12127195 + ... + 13167834.

It is an arithmetic number, because the mean of its divisors is an integer number (328961865150).

Almost surely, 2^{13161509489280} is an apocalyptic number.

13161509489280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13161509489280 is an abundant number, since it is smaller than the sum of its proper divisors (28945609249920).

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

13161509489280 is a wasteful number, since it uses less digits than its factorization.

13161509489280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25295322 (or 25295310 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 13161509489280 in words is "thirteen trillion, one hundred sixty-one billion, five hundred nine million, four hundred eighty-nine thousand, two hundred eighty".