56021533512066 has 32 divisors (see below), whose sum is σ = 124495082712000. Its totient is φ = 18673426601280.

The previous prime is 56021533512011. The next prime is 56021533512089. The reversal of 56021533512066 is 66021533512065.

56021533512066 is a `hidden beast` number, since 5 + 6 + 0 + 2 + 1 + 533 + 51 + 2 + 0 + 66 = 666.

56021533512066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9168391 + ... + 14003658.

It is an arithmetic number, because the mean of its divisors is an integer number (3890471334750).

Almost surely, 2^{56021533512066} is an apocalyptic number.

56021533512066 is an abundant number, since it is smaller than the sum of its proper divisors (68473549199934).

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

56021533512066 is a wasteful number, since it uses less digits than its factorization.

56021533512066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23216831 (or 23216825 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

Subtracting 56021533512066 from its reverse (66021533512065), we obtain a palindrome (9999999999999).

The spelling of 56021533512066 in words is "fifty-six trillion, twenty-one billion, five hundred thirty-three million, five hundred twelve thousand, sixty-six".