66598732200 has 1536 divisors, whose sum is σ = 295981056000. Its totient is φ = 12192768000.

The previous prime is 66598732159. The next prime is 66598732201. The reversal of 66598732200 is 223789566.

It is a super-2 number, since 2×66598732200² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66598732200.

It is not an unprimeable number, because it can be changed into a prime (66598732201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 912311364 + ... + 912311436.

It is an arithmetic number, because the mean of its divisors is an integer number (192696000).

Almost surely, 2^66598732200 is an apocalyptic number.

66598732200 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 66598732200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147990528000).

66598732200 is an abundant number, since it is smaller than the sum of its proper divisors (229382323800).

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

66598732200 is a wasteful number, since it uses less digits than its factorization.

66598732200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 66598732200 in words is "sixty-six billion, five hundred ninety-eight million, seven hundred thirty-two thousand, two hundred".