667223621200 has 60 divisors (see below), whose sum is σ = 1640283972448. Its totient is φ = 260682710400.

The previous prime is 667223621081. The next prime is 667223621279. The reversal of 667223621200 is 2126322766.

It is a self number, because there is not a number n which added to its sum of digits gives 667223621200.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 19378836 + ... + 19413235.

Almost surely, 2^667223621200 is an apocalyptic number.

It is an amenable number.

667223621200 is an abundant number, since it is smaller than the sum of its proper divisors (973060351248).

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

667223621200 is a wasteful number, since it uses less digits than its factorization.

667223621200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38792132 (or 38792121 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

Adding to 667223621200 its reverse (2126322766), we get a palindrome (669349943966).

The spelling of 667223621200 in words is "six hundred sixty-seven billion, two hundred twenty-three million, six hundred twenty-one thousand, two hundred".