66260255243 has 24 divisors (see below), whose sum is σ = 83024686080. Its totient is φ = 52414750080.

The previous prime is 66260255227. The next prime is 66260255251. The reversal of 66260255243 is 34255206266.

It is not a de Polignac number, because 66260255243 - 2⁴ = 66260255227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66260255243.

It is not an unprimeable number, because it can be changed into a prime (66260255543) 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 23 ways as a sum of consecutive naturals, for example, 4533878 + ... + 4548468.

It is an arithmetic number, because the mean of its divisors is an integer number (3459361920).

Almost surely, 2^66260255243 is an apocalyptic number.

66260255243 is a deficient number, since it is larger than the sum of its proper divisors (16764430837).

66260255243 is a wasteful number, since it uses less digits than its factorization.

66260255243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21747 (or 21740 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 66260255243 in words is "sixty-six billion, two hundred sixty million, two hundred fifty-five thousand, two hundred forty-three".