66539238362 has 8 divisors (see below), whose sum is σ = 99816014100. Its totient is φ = 33267233664.

The previous prime is 66539238361. The next prime is 66539238383. The reversal of 66539238362 is 26383293566.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 44833404121 + 21705834241 = 211739^2 + 147329^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66539238361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157687 + ... + 1213802.

Almost surely, 2^66539238362 is an apocalyptic number.

66539238362 is a deficient number, since it is larger than the sum of its proper divisors (33276775738).

66539238362 is a wasteful number, since it uses less digits than its factorization.

66539238362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385520.

The product of its digits is 8398080, while the sum is 53.

The spelling of 66539238362 in words is "sixty-six billion, five hundred thirty-nine million, two hundred thirty-eight thousand, three hundred sixty-two".