66542635234255 has 8 divisors (see below), whose sum is σ = 81550123180992. Its totient is φ = 52101467587488.

The previous prime is 66542635234253. The next prime is 66542635234343. The reversal of 66542635234255 is 55243253624566.

66542635234255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66542635234255 - 2¹ = 66542635234253 is a prime.

It is a super-2 number, since 2×66542635234255² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66542635234255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66542635234253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141580074732 + ... + 141580075201.

It is an arithmetic number, because the mean of its divisors is an integer number (10193765397624).

Almost surely, 2^{66542635234255} is an apocalyptic number.

66542635234255 is a deficient number, since it is larger than the sum of its proper divisors (15007487946737).

66542635234255 is a wasteful number, since it uses less digits than its factorization.

66542635234255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283160149985.

The product of its digits is 155520000, while the sum is 58.

The spelling of 66542635234255 in words is "sixty-six trillion, five hundred forty-two billion, six hundred thirty-five million, two hundred thirty-four thousand, two hundred fifty-five".