66506130578384 has 40 divisors (see below), whose sum is σ = 149759567661120. Its totient is φ = 28019532008448.

The previous prime is 66506130578357. The next prime is 66506130578387. The reversal of 66506130578384 is 48387503160566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66506130578387) 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, 5032236929 + ... + 5032250144.

It is an arithmetic number, because the mean of its divisors is an integer number (3743989191528).

Almost surely, 2^{66506130578384} is an apocalyptic number.

It is an amenable number.

66506130578384 is an abundant number, since it is smaller than the sum of its proper divisors (83253437082736).

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

66506130578384 is a wasteful number, since it uses less digits than its factorization.

66506130578384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10064487147 (or 10064487141 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 62.

The spelling of 66506130578384 in words is "sixty-six trillion, five hundred six billion, one hundred thirty million, five hundred seventy-eight thousand, three hundred eighty-four".