664632150212 has 24 divisors (see below), whose sum is σ = 1236316234104. Its totient is φ = 311551066112.

The previous prime is 664632150191. The next prime is 664632150233. The reversal of 664632150212 is 212051236466.

664632150212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (664632150191) and next prime (664632150233).

It can be written as a sum of positive squares in 4 ways, for example, as 546085528576 + 118546621636 = 738976^2 + 344306^2 .

It is a super-3 number, since 3×664632150212³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18998093 + ... + 19033044.

It is an arithmetic number, because the mean of its divisors is an integer number (51513176421).

Almost surely, 2^664632150212 is an apocalyptic number.

It is an amenable number.

664632150212 is a deficient number, since it is larger than the sum of its proper divisors (571684083892).

664632150212 is a wasteful number, since it uses less digits than its factorization.

664632150212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38031415 (or 38031413 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 664632150212 its reverse (212051236466), we get a palindrome (876683386678).

The spelling of 664632150212 in words is "six hundred sixty-four billion, six hundred thirty-two million, one hundred fifty thousand, two hundred twelve".