667212633232 has 10 divisors (see below), whose sum is σ = 1292724476918. Its totient is φ = 333606316608.

The previous prime is 667212633221. The next prime is 667212633233. The reversal of 667212633232 is 232336212766.

It can be written as a sum of positive squares in only one way, i.e., 400415590656 + 266797042576 = 632784^2 + 516524^2 .

It is not an unprimeable number, because it can be changed into a prime (667212633233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20850394773 + ... + 20850394804.

Almost surely, 2^667212633232 is an apocalyptic number.

It is an amenable number.

667212633232 is a deficient number, since it is larger than the sum of its proper divisors (625511843686).

667212633232 is a wasteful number, since it uses less digits than its factorization.

667212633232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41700789585 (or 41700789579 counting only the distinct ones).

The product of its digits is 653184, while the sum is 43.

Adding to 667212633232 its reverse (232336212766), we get a palindrome (899548845998).

The spelling of 667212633232 in words is "six hundred sixty-seven billion, two hundred twelve million, six hundred thirty-three thousand, two hundred thirty-two".