66522551505575 has 48 divisors (see below), whose sum is σ = 92150603102976. Its totient is φ = 47218475404800.

The previous prime is 66522551505521. The next prime is 66522551505577. The reversal of 66522551505575 is 57550515522566.

It is not a de Polignac number, because 66522551505575 - 2²² = 66522547311271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66522551505577) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13168334 + ... + 17505716.

It is an arithmetic number, because the mean of its divisors is an integer number (1919804231312).

Almost surely, 2^{66522551505575} is an apocalyptic number.

66522551505575 is a deficient number, since it is larger than the sum of its proper divisors (25628051597401).

66522551505575 is a wasteful number, since it uses less digits than its factorization.

66522551505575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338744 (or 4338739 counting only the distinct ones).

The product of its (nonzero) digits is 78750000, while the sum is 59.

The spelling of 66522551505575 in words is "sixty-six trillion, five hundred twenty-two billion, five hundred fifty-one million, five hundred five thousand, five hundred seventy-five".