66522512145 has 8 divisors (see below), whose sum is σ = 106436019456. Its totient is φ = 35478673136.

The previous prime is 66522512129. The next prime is 66522512149. The reversal of 66522512145 is 54121522566.

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 66522512145 - 2⁴ = 66522512129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66522512149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2217417057 + ... + 2217417086.

It is an arithmetic number, because the mean of its divisors is an integer number (13304502432).

Almost surely, 2^66522512145 is an apocalyptic number.

It is an amenable number.

66522512145 is a deficient number, since it is larger than the sum of its proper divisors (39913507311).

66522512145 is a wasteful number, since it uses less digits than its factorization.

66522512145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434834151.

The product of its digits is 144000, while the sum is 39.

The spelling of 66522512145 in words is "sixty-six billion, five hundred twenty-two million, five hundred twelve thousand, one hundred forty-five".