66042212576 has 24 divisors (see below), whose sum is σ = 130126477320. Its totient is φ = 32994218368.

The previous prime is 66042212563. The next prime is 66042212591. The reversal of 66042212576 is 67521224066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800306 + ... + 878961.

It is an arithmetic number, because the mean of its divisors is an integer number (5421936555).

Almost surely, 2^66042212576 is an apocalyptic number.

It is an amenable number.

66042212576 is a deficient number, since it is larger than the sum of its proper divisors (64084264744).

66042212576 is a wasteful number, since it uses less digits than its factorization.

66042212576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680506 (or 1680498 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 66042212576 in words is "sixty-six billion, forty-two million, two hundred twelve thousand, five hundred seventy-six".