56005055605980 has 576 divisors, whose sum is σ = 190993766745600. Its totient is φ = 13693898050560.

The previous prime is 56005055605883. The next prime is 56005055606011. The reversal of 56005055605980 is 8950655050065.

56005055605980 is a `hidden beast` number, since 5 + 6 + 0 + 0 + 5 + 0 + 556 + 0 + 5 + 9 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 13243094506 + ... + 13243098734.

It is an arithmetic number, because the mean of its divisors is an integer number (331586400600).

Almost surely, 2^{56005055605980} 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 56005055605980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95496883372800).

56005055605980 is an abundant number, since it is smaller than the sum of its proper divisors (134988711139620).

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

56005055605980 is a wasteful number, since it uses less digits than its factorization.

56005055605980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5616 (or 5602 counting only the distinct ones).

The product of its (nonzero) digits is 8100000, while the sum is 54.

The spelling of 56005055605980 in words is "fifty-six trillion, five billion, fifty-five million, six hundred five thousand, nine hundred eighty".