666534110000125 has 16 divisors (see below), whose sum is σ = 831960244065600. Its totient is φ = 533146727240400.

The previous prime is 666534110000029. The next prime is 666534110000149. The reversal of 666534110000125 is 521000011435666.

It is a happy number.

It is not a de Polignac number, because 666534110000125 - 2³⁷ = 666396671046653 is a prime.

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, 401973115 + ... + 403627864.

It is an arithmetic number, because the mean of its divisors is an integer number (51997515254100).

Almost surely, 2^{666534110000125} is an apocalyptic number.

It is an amenable number.

666534110000125 is a deficient number, since it is larger than the sum of its proper divisors (165426134065475).

666534110000125 is an equidigital number, since it uses as much as digits as its factorization.

666534110000125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805607613 (or 805607603 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 666534110000125 in words is "six hundred sixty-six trillion, five hundred thirty-four billion, one hundred ten million, one hundred twenty-five", and thus it is an aban number.