66506130578382 has 32 divisors (see below), whose sum is σ = 145439398782720. Its totient is φ = 20106829307520.

The previous prime is 66506130578357. The next prime is 66506130578387. The reversal of 66506130578382 is 28387503160566.

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 15 ways as a sum of consecutive naturals, for example, 1163561082 + ... + 1163618237.

It is an arithmetic number, because the mean of its divisors is an integer number (4544981211960).

Almost surely, 2^{66506130578382} is an apocalyptic number.

66506130578382 is an abundant number, since it is smaller than the sum of its proper divisors (78933268204338).

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

66506130578382 is a wasteful number, since it uses less digits than its factorization.

66506130578382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327179768.

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 66506130578382 in words is "sixty-six trillion, five hundred six billion, one hundred thirty million, five hundred seventy-eight thousand, three hundred eighty-two".