66730541652 has 36 divisors (see below), whose sum is σ = 168924153216. Its totient is φ = 22211315280.

The previous prime is 66730541651. The next prime is 66730541659. The reversal of 66730541652 is 25614503766.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 66730541598 and 66730541607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66730541651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1316388 + ... + 1366139.

Almost surely, 2^66730541652 is an apocalyptic number.

It is an amenable number.

66730541652 is an abundant number, since it is smaller than the sum of its proper divisors (102193611564).

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

66730541652 is a wasteful number, since it uses less digits than its factorization.

66730541652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683228 (or 2683223 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 66730541652 in words is "sixty-six billion, seven hundred thirty million, five hundred forty-one thousand, six hundred fifty-two".