66186816632 has 8 divisors (see below), whose sum is σ = 124100281200. Its totient is φ = 33093408312.

The previous prime is 66186816629. The next prime is 66186816649. The reversal of 66186816632 is 23661868166.

66186816632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4136676032 + ... + 4136676047.

It is an arithmetic number, because the mean of its divisors is an integer number (15512535150).

Almost surely, 2^66186816632 is an apocalyptic number.

It is an amenable number.

66186816632 is a deficient number, since it is larger than the sum of its proper divisors (57913464568).

66186816632 is a wasteful number, since it uses less digits than its factorization.

66186816632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8273352085 (or 8273352081 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 53.

The spelling of 66186816632 in words is "sixty-six billion, one hundred eighty-six million, eight hundred sixteen thousand, six hundred thirty-two".