66530426200 has 288 divisors, whose sum is σ = 183385762560. Its totient is φ = 22377734400.

The previous prime is 66530426197. The next prime is 66530426203. The reversal of 66530426200 is 262403566.

It is an interprime number because it is at equal distance from previous prime (66530426197) and next prime (66530426203).

It is a super-2 number, since 2×66530426200² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66530426203) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 213924045 + ... + 213924355.

It is an arithmetic number, because the mean of its divisors is an integer number (636756120).

Almost surely, 2^66530426200 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 66530426200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91692881280).

66530426200 is an abundant number, since it is smaller than the sum of its proper divisors (116855336360).

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

66530426200 is a wasteful number, since it uses less digits than its factorization.

66530426200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 66530426200 its reverse (262403566), we get a palindrome (66792829766).

The spelling of 66530426200 in words is "sixty-six billion, five hundred thirty million, four hundred twenty-six thousand, two hundred".