669112176000 has 128 divisors (see below), whose sum is σ = 2218107022560. Its totient is φ = 178429900800.

The previous prime is 669112175999. The next prime is 669112176013. The reversal of 669112176000 is 671211966.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×669112176000² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 669112176000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6921919 + ... + 7017918.

Almost surely, 2^669112176000 is an apocalyptic number.

669112176000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669112176000 is an abundant number, since it is smaller than the sum of its proper divisors (1548994846560).

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

669112176000 is a wasteful number, since it uses less digits than its factorization.

669112176000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13939869 (or 13939847 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

Adding to 669112176000 its reverse (671211966), we get a palindrome (669783387966).

The spelling of 669112176000 in words is "six hundred sixty-nine billion, one hundred twelve million, one hundred seventy-six thousand".