66383655373 has 24 divisors (see below), whose sum is σ = 77835643200. Its totient is φ = 56448520128.

The previous prime is 66383655367. The next prime is 66383655389. The reversal of 66383655373 is 37355638366.

It is a de Polignac number, because none of the positive numbers 2^k-66383655373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66383655313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17848008 + ... + 17851726.

It is an arithmetic number, because the mean of its divisors is an integer number (3243151800).

Almost surely, 2^66383655373 is an apocalyptic number.

It is an amenable number.

66383655373 is a deficient number, since it is larger than the sum of its proper divisors (11451987827).

66383655373 is a wasteful number, since it uses less digits than its factorization.

66383655373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529 (or 6522 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 55.

The spelling of 66383655373 in words is "sixty-six billion, three hundred eighty-three million, six hundred fifty-five thousand, three hundred seventy-three".