66213511152 has 20 divisors (see below), whose sum is σ = 171051570600. Its totient is φ = 22071170368.

The previous prime is 66213511129. The next prime is 66213511163. The reversal of 66213511152 is 25111531266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689724027 + ... + 689724122.

It is an arithmetic number, because the mean of its divisors is an integer number (8552578530).

Almost surely, 2^66213511152 is an apocalyptic number.

It is an amenable number.

66213511152 is an abundant number, since it is smaller than the sum of its proper divisors (104838059448).

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

66213511152 is a wasteful number, since it uses less digits than its factorization.

66213511152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379448160 (or 1379448154 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The spelling of 66213511152 in words is "sixty-six billion, two hundred thirteen million, five hundred eleven thousand, one hundred fifty-two".