66492388895 has 4 divisors (see below), whose sum is σ = 79790866680. Its totient is φ = 53193911112.

The previous prime is 66492388883. The next prime is 66492388967. The reversal of 66492388895 is 59888329466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66492388895 - 2⁸ = 66492388639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6649238885 + ... + 6649238894.

It is an arithmetic number, because the mean of its divisors is an integer number (19947716670).

Almost surely, 2^66492388895 is an apocalyptic number.

66492388895 is a deficient number, since it is larger than the sum of its proper divisors (13298477785).

66492388895 is a wasteful number, since it uses less digits than its factorization.

66492388895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13298477784.

The product of its digits is 179159040, while the sum is 68.

The spelling of 66492388895 in words is "sixty-six billion, four hundred ninety-two million, three hundred eighty-eight thousand, eight hundred ninety-five".