666985014552 has 64 divisors (see below), whose sum is σ = 1679639483520. Its totient is φ = 220710399488.

The previous prime is 666985014547. The next prime is 666985014599. The reversal of 666985014552 is 255410589666.

666985014552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 666985014492 and 666985014501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1714048 + ... + 2066864.

It is an arithmetic number, because the mean of its divisors is an integer number (26244366930).

Almost surely, 2^666985014552 is an apocalyptic number.

It is an amenable number.

666985014552 is an abundant number, since it is smaller than the sum of its proper divisors (1012654468968).

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

666985014552 is a wasteful number, since it uses less digits than its factorization.

666985014552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353400 (or 353396 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 57.

The spelling of 666985014552 in words is "six hundred sixty-six billion, nine hundred eighty-five million, fourteen thousand, five hundred fifty-two".