66701074138 has 8 divisors (see below), whose sum is σ = 100120569120. Its totient is φ = 33327551100.

The previous prime is 66701074133. The next prime is 66701074151. The reversal of 66701074138 is 83147010766.

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

It is a junction number, because it is equal to n+sod(n) for n = 66701074094 and 66701074103.

It is not an unprimeable number, because it can be changed into a prime (66701074133) 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, 11489358 + ... + 11495161.

It is an arithmetic number, because the mean of its divisors is an integer number (12515071140).

Almost surely, 2^66701074138 is an apocalyptic number.

66701074138 is a deficient number, since it is larger than the sum of its proper divisors (33419494982).

66701074138 is a wasteful number, since it uses less digits than its factorization.

66701074138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22985972.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 66701074138 in words is "sixty-six billion, seven hundred one million, seventy-four thousand, one hundred thirty-eight".