66320034000 has 320 divisors, whose sum is σ = 235586707200. Its totient is φ = 15916800000.

The previous prime is 66320033977. The next prime is 66320034013. The reversal of 66320034000 is 43002366.

It is a super-2 number, since 2×66320034000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6661026 + ... + 6670974.

It is an arithmetic number, because the mean of its divisors is an integer number (736208460).

Almost surely, 2^66320034000 is an apocalyptic number.

66320034000 is a gapful number since it is divisible by the number (60) 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 66320034000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117793353600).

66320034000 is an abundant number, since it is smaller than the sum of its proper divisors (169266673200).

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

66320034000 is a wasteful number, since it uses less digits than its factorization.

66320034000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087 (or 10071 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 66320034000 its reverse (43002366), we get a palindrome (66363036366).

The spelling of 66320034000 in words is "sixty-six billion, three hundred twenty million, thirty-four thousand".