66233113320 has 128 divisors (see below), whose sum is σ = 216837181440. Its totient is φ = 16051011840.

The previous prime is 66233113307. The next prime is 66233113351. The reversal of 66233113320 is 2331133266.

It is a super-2 number, since 2×66233113320² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 4912909 + ... + 4926371.

It is an arithmetic number, because the mean of its divisors is an integer number (1694040480).

Almost surely, 2^66233113320 is an apocalyptic number.

66233113320 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 66233113320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108418590720).

66233113320 is an abundant number, since it is smaller than the sum of its proper divisors (150604068120).

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

66233113320 is a wasteful number, since it uses less digits than its factorization.

66233113320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17215 (or 17211 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 66233113320 its reverse (2331133266), we get a palindrome (68564246586).

It can be divided in two parts, 6 and 6233113320, that added together give a palindrome (6233113326).

The spelling of 66233113320 in words is "sixty-six billion, two hundred thirty-three million, one hundred thirteen thousand, three hundred twenty".