66063565141 has 4 divisors (see below), whose sum is σ = 75501217312. Its totient is φ = 56625912972.

The previous prime is 66063565109. The next prime is 66063565151. The reversal of 66063565141 is 14156536066.

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 66063565141 - 2⁵ = 66063565109 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 (66063565151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4718826075 + ... + 4718826088.

It is an arithmetic number, because the mean of its divisors is an integer number (18875304328).

Almost surely, 2^66063565141 is an apocalyptic number.

It is an amenable number.

66063565141 is a deficient number, since it is larger than the sum of its proper divisors (9437652171).

66063565141 is an equidigital number, since it uses as much as digits as its factorization.

66063565141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9437652170.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 66063565141 in words is "sixty-six billion, sixty-three million, five hundred sixty-five thousand, one hundred forty-one".