13561179219456 has 160 divisors (see below), whose sum is σ = 40683539229696. Its totient is φ = 3976885248000.

The previous prime is 13561179219361. The next prime is 13561179219481. The reversal of 13561179219456 is 65491297116531.

It is a self number, because there is not a number n which added to its sum of digits gives 13561179219456.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12421815 + ... + 13469366.

Almost surely, 2^{13561179219456} is an apocalyptic number.

13561179219456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13561179219456 is an abundant number, since it is smaller than the sum of its proper divisors (27122360010240).

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

13561179219456 is a wasteful number, since it uses less digits than its factorization.

13561179219456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25891244 (or 25891228 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 60.

The spelling of 13561179219456 in words is "thirteen trillion, five hundred sixty-one billion, one hundred seventy-nine million, two hundred nineteen thousand, four hundred fifty-six".