66108086387 has 8 divisors (see below), whose sum is σ = 75610181472. Its totient is φ = 56620512000.

The previous prime is 66108086383. The next prime is 66108086389. The reversal of 66108086387 is 78368080166.

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 66108086387 - 2² = 66108086383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66108086383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3620414 + ... + 3638627.

It is an arithmetic number, because the mean of its divisors is an integer number (9451272684).

Almost surely, 2^66108086387 is an apocalyptic number.

66108086387 is a deficient number, since it is larger than the sum of its proper divisors (9502095085).

66108086387 is a wasteful number, since it uses less digits than its factorization.

66108086387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7260349.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 66108086387 in words is "sixty-six billion, one hundred eight million, eighty-six thousand, three hundred eighty-seven".