66370489616 has 80 divisors (see below), whose sum is σ = 147946959360. Its totient is φ = 28634757120.

The previous prime is 66370489613. The next prime is 66370489621. The reversal of 66370489616 is 61698407366.

It is not an unprimeable number, because it can be changed into a prime (66370489613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46931 + ... + 367346.

It is an arithmetic number, because the mean of its divisors is an integer number (1849336992).

Almost surely, 2^66370489616 is an apocalyptic number.

It is an amenable number.

66370489616 is an abundant number, since it is smaller than the sum of its proper divisors (81576469744).

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

66370489616 is a wasteful number, since it uses less digits than its factorization.

66370489616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414352 (or 414346 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 66370489616 in words is "sixty-six billion, three hundred seventy million, four hundred eighty-nine thousand, six hundred sixteen".