66305465066623 has 8 divisors (see below), whose sum is σ = 67569576353136. Its totient is φ = 65041837660800.

The previous prime is 66305465066537. The next prime is 66305465066671. The reversal of 66305465066623 is 32666056450366.

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 66305465066623 - 2²⁹ = 66304928195711 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 (66305465066723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120693498 + ... + 121241623.

It is an arithmetic number, because the mean of its divisors is an integer number (8446197044142).

Almost surely, 2^{66305465066623} is an apocalyptic number.

66305465066623 is a deficient number, since it is larger than the sum of its proper divisors (1264111286513).

66305465066623 is a wasteful number, since it uses less digits than its factorization.

66305465066623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241940345.

The product of its (nonzero) digits is 83980800, while the sum is 58.

The spelling of 66305465066623 in words is "sixty-six trillion, three hundred five billion, four hundred sixty-five million, sixty-six thousand, six hundred twenty-three".