5561054189856 has 864 divisors, whose sum is σ = 19151039718720. Its totient is φ = 1523663032320.

The previous prime is 5561054189851. The next prime is 5561054189923. The reversal of 5561054189856 is 6589814501655.

5561054189856 is a `hidden beast` number, since 5 + 5 + 6 + 1 + 0 + 541 + 8 + 9 + 85 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 5561054189793 and 5561054189802.

It is not an unprimeable number, because it can be changed into a prime (5561054189851) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 1298399491 + ... + 1298403773.

It is an arithmetic number, because the mean of its divisors is an integer number (22165555230).

Almost surely, 2^{5561054189856} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5561054189856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9575519859360).

5561054189856 is an abundant number, since it is smaller than the sum of its proper divisors (13589985528864).

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

5561054189856 is a wasteful number, since it uses less digits than its factorization.

5561054189856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430 (or 4408 counting only the distinct ones).

The product of its (nonzero) digits is 51840000, while the sum is 63.

The spelling of 5561054189856 in words is "five trillion, five hundred sixty-one billion, fifty-four million, one hundred eighty-nine thousand, eight hundred fifty-six".