66713116824 has 24 divisors (see below), whose sum is σ = 180681358260. Its totient is φ = 22237705584.

The previous prime is 66713116777. The next prime is 66713116861. The reversal of 66713116824 is 42861131766.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 66713116824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 463285462 + ... + 463285605.

Almost surely, 2^66713116824 is an apocalyptic number.

It is an amenable number.

66713116824 is an abundant number, since it is smaller than the sum of its proper divisors (113968241436).

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

66713116824 is a wasteful number, since it uses less digits than its factorization.

66713116824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926571079 (or 926571072 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 66713116824 in words is "sixty-six billion, seven hundred thirteen million, one hundred sixteen thousand, eight hundred twenty-four".