8664425556212 has 12 divisors (see below), whose sum is σ = 15370453555716. Its totient is φ = 4272867397440.

The previous prime is 8664425556109. The next prime is 8664425556217. The reversal of 8664425556212 is 2126555244668.

It can be written as a sum of positive squares in 2 ways, for example, as 2121491293156 + 6542934263056 = 1456534^2 + 2557916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8664425556217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14836344839 + ... + 14836345422.

It is an arithmetic number, because the mean of its divisors is an integer number (1280871129643).

Almost surely, 2^{8664425556212} is an apocalyptic number.

It is an amenable number.

8664425556212 is a deficient number, since it is larger than the sum of its proper divisors (6706027999504).

8664425556212 is a wasteful number, since it uses less digits than its factorization.

8664425556212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29672690338 (or 29672690336 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 56.

The spelling of 8664425556212 in words is "eight trillion, six hundred sixty-four billion, four hundred twenty-five million, five hundred fifty-six thousand, two hundred twelve".