66614415072 has 48 divisors (see below), whose sum is σ = 174985226640. Its totient is φ = 22189263872.

The previous prime is 66614415047. The next prime is 66614415079. The reversal of 66614415072 is 27051441666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66614415079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104547 + ... + 379682.

It is an arithmetic number, because the mean of its divisors is an integer number (3645525555).

Almost surely, 2^66614415072 is an apocalyptic number.

It is an amenable number.

66614415072 is an abundant number, since it is smaller than the sum of its proper divisors (108370811568).

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

66614415072 is a wasteful number, since it uses less digits than its factorization.

66614415072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485675 (or 485667 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 66614415072 in words is "sixty-six billion, six hundred fourteen million, four hundred fifteen thousand, seventy-two".