13556519920944 has 1440 divisors, whose sum is σ = 53719061760000. Its totient is φ = 3133889740800.

The previous prime is 13556519920939. The next prime is 13556519920963. The reversal of 13556519920944 is 44902991565531.

13556519920944 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 6 + 519 + 9 + 20 + 94 + 4 = 666.

13556519920944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13556519920944² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 10853898432 + ... + 10853899680.

It is an arithmetic number, because the mean of its divisors is an integer number (37304904000).

Almost surely, 2^{13556519920944} is an apocalyptic number.

13556519920944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13556519920944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26859530880000).

13556519920944 is an abundant number, since it is smaller than the sum of its proper divisors (40162541839056).

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

13556519920944 is a wasteful number, since it uses less digits than its factorization.

13556519920944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 52488000, while the sum is 63.

The spelling of 13556519920944 in words is "thirteen trillion, five hundred fifty-six billion, five hundred nineteen million, nine hundred twenty thousand, nine hundred forty-four".