66789630412 has 24 divisors (see below), whose sum is σ = 118787760000. Its totient is φ = 32852624256.

The previous prime is 66789630409. The next prime is 66789630431. The reversal of 66789630412 is 21403698766.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 66789630412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180412 + ... + 407587.

It is an arithmetic number, because the mean of its divisors is an integer number (4949490000).

Almost surely, 2^66789630412 is an apocalyptic number.

It is an amenable number.

66789630412 is a deficient number, since it is larger than the sum of its proper divisors (51998129588).

66789630412 is a wasteful number, since it uses less digits than its factorization.

66789630412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588465 (or 588463 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 66789630412 in words is "sixty-six billion, seven hundred eighty-nine million, six hundred thirty thousand, four hundred twelve".