66492282781655 has 8 divisors (see below), whose sum is σ = 79793815585200. Its totient is φ = 53191775393856.

The previous prime is 66492282781649. The next prime is 66492282781657. The reversal of 66492282781655 is 55618728229466.

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 66492282781655 - 2¹⁰ = 66492282780631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66492282781657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256211270 + ... + 256470659.

It is an arithmetic number, because the mean of its divisors is an integer number (9974226948150).

Almost surely, 2^{66492282781655} is an apocalyptic number.

66492282781655 is a deficient number, since it is larger than the sum of its proper divisors (13301532803545).

66492282781655 is a wasteful number, since it uses less digits than its factorization.

66492282781655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512707873.

The product of its digits is 696729600, while the sum is 71.

The spelling of 66492282781655 in words is "sixty-six trillion, four hundred ninety-two billion, two hundred eighty-two million, seven hundred eighty-one thousand, six hundred fifty-five".