66205211052 has 24 divisors (see below), whose sum is σ = 154617155056. Its totient is φ = 22048642368.

The previous prime is 66205211041. The next prime is 66205211081. The reversal of 66205211052 is 25011250266.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2456203 + ... + 2483010.

Almost surely, 2^66205211052 is an apocalyptic number.

It is an amenable number.

66205211052 is an abundant number, since it is smaller than the sum of its proper divisors (88411944004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66205211052 is a wasteful number, since it uses less digits than its factorization.

66205211052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940337 (or 4940335 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 66205211052 in words is "sixty-six billion, two hundred five million, two hundred eleven thousand, fifty-two".