667215811288 has 24 divisors (see below), whose sum is σ = 1354665240900. Its totient is φ = 307945758432.

The previous prime is 667215811271. The next prime is 667215811289. The reversal of 667215811288 is 882118512766.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667215811289) 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 in 5 ways as a sum of consecutive naturals, for example, 246750058 + ... + 246752761.

Almost surely, 2^667215811288 is an apocalyptic number.

It is an amenable number.

667215811288 is an abundant number, since it is smaller than the sum of its proper divisors (687449429612).

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

667215811288 is a wasteful number, since it uses less digits than its factorization.

667215811288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493502851 (or 493502834 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 55.

The spelling of 667215811288 in words is "six hundred sixty-seven billion, two hundred fifteen million, eight hundred eleven thousand, two hundred eighty-eight".