66655470741 has 4 divisors (see below), whose sum is σ = 88873960992. Its totient is φ = 44436980492.

The previous prime is 66655470709. The next prime is 66655470767. The reversal of 66655470741 is 14707455666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66655470741 - 2⁵ = 66655470709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66655470701) 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, 11109245121 + ... + 11109245126.

It is an arithmetic number, because the mean of its divisors is an integer number (22218490248).

Almost surely, 2^66655470741 is an apocalyptic number.

It is an amenable number.

66655470741 is a deficient number, since it is larger than the sum of its proper divisors (22218490251).

66655470741 is a wasteful number, since it uses less digits than its factorization.

66655470741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22218490250.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 66655470741 in words is "sixty-six billion, six hundred fifty-five million, four hundred seventy thousand, seven hundred forty-one".