66130435212 has 12 divisors (see below), whose sum is σ = 154304348856. Its totient is φ = 22043478400.

The previous prime is 66130435201. The next prime is 66130435247. The reversal of 66130435212 is 21253403166.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×66130435212² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755434789 + ... + 2755434812.

It is an arithmetic number, because the mean of its divisors is an integer number (12858695738).

Almost surely, 2^66130435212 is an apocalyptic number.

It is an amenable number.

66130435212 is an abundant number, since it is smaller than the sum of its proper divisors (88173913644).

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

66130435212 is a wasteful number, since it uses less digits than its factorization.

66130435212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510869608 (or 5510869606 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 66130435212 its reverse (21253403166), we get a palindrome (87383838378).

The spelling of 66130435212 in words is "sixty-six billion, one hundred thirty million, four hundred thirty-five thousand, two hundred twelve".