66411535612 has 12 divisors (see below), whose sum is σ = 118692957600. Its totient is φ = 32499262016.

The previous prime is 66411535537. The next prime is 66411535649. The reversal of 66411535612 is 21653511466.

It is a happy number.

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, 176626237 + ... + 176626612.

It is an arithmetic number, because the mean of its divisors is an integer number (9891079800).

Almost surely, 2^66411535612 is an apocalyptic number.

It is an amenable number.

66411535612 is a deficient number, since it is larger than the sum of its proper divisors (52281421988).

66411535612 is a wasteful number, since it uses less digits than its factorization.

66411535612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353252900 (or 353252898 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The spelling of 66411535612 in words is "sixty-six billion, four hundred eleven million, five hundred thirty-five thousand, six hundred twelve".