66392980992 has 320 divisors, whose sum is σ = 214305241920. Its totient is φ = 20424130560.

The previous prime is 66392980919. The next prime is 66392981009. The reversal of 66392980992 is 29908929366.

66392980992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14554392 + ... + 14558952.

It is an arithmetic number, because the mean of its divisors is an integer number (669703881).

Almost surely, 2^66392980992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66392980992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107152620960).

66392980992 is an abundant number, since it is smaller than the sum of its proper divisors (147912260928).

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

66392980992 is an frugal number, since it uses more digits than its factorization.

66392980992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613 (or 4579 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 63.

The spelling of 66392980992 in words is "sixty-six billion, three hundred ninety-two million, nine hundred eighty thousand, nine hundred ninety-two".