66366505052 has 24 divisors (see below), whose sum is σ = 118485763200. Its totient is φ = 32520029696.

The previous prime is 66366505043. The next prime is 66366505063. The reversal of 66366505052 is 25050566366.

It is a junction number, because it is equal to n+sod(n) for n = 66366504994 and 66366505012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784652 + ... + 865107.

It is an arithmetic number, because the mean of its divisors is an integer number (4936906800).

Almost surely, 2^66366505052 is an apocalyptic number.

It is an amenable number.

66366505052 is a deficient number, since it is larger than the sum of its proper divisors (52119258148).

66366505052 is a wasteful number, since it uses less digits than its factorization.

66366505052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649965 (or 1649963 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 44.

The spelling of 66366505052 in words is "sixty-six billion, three hundred sixty-six million, five hundred five thousand, fifty-two".