667616570252 has 24 divisors (see below), whose sum is σ = 1249302307680. Its totient is φ = 311061881600.

The previous prime is 667616570249. The next prime is 667616570281. The reversal of 667616570252 is 252075616766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 667616570194 and 667616570203.

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 7 ways as a sum of consecutive naturals, for example, 48596552 + ... + 48610287.

It is an arithmetic number, because the mean of its divisors is an integer number (52054262820).

Almost surely, 2^667616570252 is an apocalyptic number.

It is an amenable number.

667616570252 is a deficient number, since it is larger than the sum of its proper divisors (581685737428).

667616570252 is a wasteful number, since it uses less digits than its factorization.

667616570252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97206961 (or 97206959 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 53.

The spelling of 667616570252 in words is "six hundred sixty-seven billion, six hundred sixteen million, five hundred seventy thousand, two hundred fifty-two".