66613790466796 has 24 divisors (see below), whose sum is σ = 117286579005120. Its totient is φ = 33103874294400.

The previous prime is 66613790466793. The next prime is 66613790466827. The reversal of 66613790466796 is 69766409731666.

It is not an unprimeable number, because it can be changed into a prime (66613790466793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66373035 + ... + 67369186.

It is an arithmetic number, because the mean of its divisors is an integer number (4886940791880).

Almost surely, 2^{66613790466796} is an apocalyptic number.

It is an amenable number.

66613790466796 is a deficient number, since it is larger than the sum of its proper divisors (50672788538324).

66613790466796 is a wasteful number, since it uses less digits than its factorization.

66613790466796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133742985 (or 133742983 counting only the distinct ones).

The product of its (nonzero) digits is 2222131968, while the sum is 76.

The spelling of 66613790466796 in words is "sixty-six trillion, six hundred thirteen billion, seven hundred ninety million, four hundred sixty-six thousand, seven hundred ninety-six".