666512606322 has 32 divisors (see below), whose sum is σ = 1481371718400. Its totient is φ = 222135979824.

The previous prime is 666512606297. The next prime is 666512606327. The reversal of 666512606322 is 223606215666.

It is a super-2 number, since 2×666512606322² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (666512606327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620938 + ... + 1310949.

It is an arithmetic number, because the mean of its divisors is an integer number (46292866200).

Almost surely, 2^666512606322 is an apocalyptic number.

666512606322 is an abundant number, since it is smaller than the sum of its proper divisors (814859112078).

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

666512606322 is a wasteful number, since it uses less digits than its factorization.

666512606322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938287 (or 1938281 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 666512606322 in words is "six hundred sixty-six billion, five hundred twelve million, six hundred six thousand, three hundred twenty-two".