66883159085 has 4 divisors (see below), whose sum is σ = 80259790908. Its totient is φ = 53506527264.

The previous prime is 66883159067. The next prime is 66883159103. The reversal of 66883159085 is 58095138866.

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

It is an interprime number because it is at equal distance from previous prime (66883159067) and next prime (66883159103).

It can be written as a sum of positive squares in 2 ways, for example, as 20504521636 + 46378637449 = 143194^2 + 215357^2 .

It is a cyclic number.

It is not a de Polignac number, because 66883159085 - 2¹⁴ = 66883142701 is a prime.

It is a Duffinian number.

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, 6688315904 + ... + 6688315913.

It is an arithmetic number, because the mean of its divisors is an integer number (20064947727).

Almost surely, 2^66883159085 is an apocalyptic number.

It is an amenable number.

66883159085 is a deficient number, since it is larger than the sum of its proper divisors (13376631823).

66883159085 is a wasteful number, since it uses less digits than its factorization.

66883159085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13376631822.

The product of its (nonzero) digits is 12441600, while the sum is 59.

The spelling of 66883159085 in words is "sixty-six billion, eight hundred eighty-three million, one hundred fifty-nine thousand, eighty-five".