667668110452 has 12 divisors (see below), whose sum is σ = 1335336220960. Its totient is φ = 286143475896.

The previous prime is 667668110429. The next prime is 667668110453. The reversal of 667668110452 is 254011866766.

667668110452 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 667668110452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667668110453) 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, 11922644802 + ... + 11922644857.

Almost surely, 2^667668110452 is an apocalyptic number.

It is an amenable number.

667668110452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

667668110452 is a wasteful number, since it uses less digits than its factorization.

667668110452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23845289670 (or 23845289668 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 667668110452 in words is "six hundred sixty-seven billion, six hundred sixty-eight million, one hundred ten thousand, four hundred fifty-two".