66041634254411 has 4 divisors (see below), whose sum is σ = 67826543288352. Its totient is φ = 64256725220472.

The previous prime is 66041634254369. The next prime is 66041634254471. The reversal of 66041634254411 is 11445243614066.

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

It is a cyclic number.

It is not a de Polignac number, because 66041634254411 - 2³⁰ = 66040560512587 is a prime.

It is a super-2 number, since 2×66041634254411² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66041634254471) 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 3 ways as a sum of consecutive naturals, for example, 892454516915 + ... + 892454516988.

It is an arithmetic number, because the mean of its divisors is an integer number (16956635822088).

Almost surely, 2^{66041634254411} is an apocalyptic number.

66041634254411 is a deficient number, since it is larger than the sum of its proper divisors (1784909033941).

66041634254411 is a wasteful number, since it uses less digits than its factorization.

66041634254411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784909033940.

The product of its (nonzero) digits is 1658880, while the sum is 47.

Adding to 66041634254411 its reverse (11445243614066), we get a palindrome (77486877868477).

The spelling of 66041634254411 in words is "sixty-six trillion, forty-one billion, six hundred thirty-four million, two hundred fifty-four thousand, four hundred eleven".