66260211231511 has 8 divisors (see below), whose sum is σ = 72284018605200. Its totient is φ = 60236429159040.

The previous prime is 66260211231437. The next prime is 66260211231521. The reversal of 66260211231511 is 11513211206266.

66260211231511 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 66260211231511 - 2⁹ = 66260211230999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66260211231521) 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, 626256 + ... + 11528773.

It is an arithmetic number, because the mean of its divisors is an integer number (9035502325650).

Almost surely, 2^{66260211231511} is an apocalyptic number.

66260211231511 is a deficient number, since it is larger than the sum of its proper divisors (6023807373689).

66260211231511 is a wasteful number, since it uses less digits than its factorization.

66260211231511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12650609.

The product of its (nonzero) digits is 25920, while the sum is 37.

Adding to 66260211231511 its reverse (11513211206266), we get a palindrome (77773422437777).

The spelling of 66260211231511 in words is "sixty-six trillion, two hundred sixty billion, two hundred eleven million, two hundred thirty-one thousand, five hundred eleven".