66547884952 has 16 divisors (see below), whose sum is σ = 124826274000. Its totient is φ = 33260878560.

The previous prime is 66547884947. The next prime is 66547884961. The reversal of 66547884952 is 25948874566.

66547884952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611324 + ... + 1652107.

It is an arithmetic number, because the mean of its divisors is an integer number (7801642125).

Almost surely, 2^66547884952 is an apocalyptic number.

It is an amenable number.

66547884952 is a deficient number, since it is larger than the sum of its proper divisors (58278389048).

66547884952 is a wasteful number, since it uses less digits than its factorization.

66547884952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265986 (or 3265982 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 64.

The spelling of 66547884952 in words is "sixty-six billion, five hundred forty-seven million, eight hundred eighty-four thousand, nine hundred fifty-two".