66392932608 has 288 divisors, whose sum is σ = 213517221120. Its totient is φ = 20264878080.

The previous prime is 66392932561. The next prime is 66392932673. The reversal of 66392932608 is 80623929366.

66392932608 is a `hidden beast` number, since 6 + 6 + 3 + 9 + 29 + 3 + 2 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 4340013 + ... + 4355283.

It is an arithmetic number, because the mean of its divisors is an integer number (741379240).

Almost surely, 2^66392932608 is an apocalyptic number.

66392932608 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66392932608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106758610560).

66392932608 is an abundant number, since it is smaller than the sum of its proper divisors (147124288512).

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

66392932608 is a wasteful number, since it uses less digits than its factorization.

66392932608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15350 (or 15330 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 66392932608 in words is "sixty-six billion, three hundred ninety-two million, nine hundred thirty-two thousand, six hundred eight".