66500743704 has 24 divisors (see below), whose sum is σ = 166255017660. Its totient is φ = 22166493456.

The previous prime is 66500743651. The next prime is 66500743721. The reversal of 66500743704 is 40734700566.

It is a happy number.

66500743704 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 (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1237017 + ... + 1289655.

Almost surely, 2^66500743704 is an apocalyptic number.

It is an amenable number.

66500743704 is an abundant number, since it is smaller than the sum of its proper divisors (99754273956).

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

66500743704 is an frugal number, since it uses more digits than its factorization.

66500743704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105287 (or 52644 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 66500743704 in words is "sixty-six billion, five hundred million, seven hundred forty-three thousand, seven hundred four".