66504546666541 has 8 divisors (see below), whose sum is σ = 70203099813120. Its totient is φ = 62825824904832.

The previous prime is 66504546666511. The next prime is 66504546666583. The reversal of 66504546666541 is 14566664540566.

66504546666541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66504546666541 - 2⁴³ = 57708453644333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66504546666511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4957839325 + ... + 4957852738.

It is an arithmetic number, because the mean of its divisors is an integer number (8775387476640).

Almost surely, 2^{66504546666541} is an apocalyptic number.

It is an amenable number.

66504546666541 is a deficient number, since it is larger than the sum of its proper divisors (3698553146579).

66504546666541 is a wasteful number, since it uses less digits than its factorization.

66504546666541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9915692435.

The product of its (nonzero) digits is 373248000, while the sum is 64.

The spelling of 66504546666541 in words is "sixty-six trillion, five hundred four billion, five hundred forty-six million, six hundred sixty-six thousand, five hundred forty-one".