666125611355 has 16 divisors (see below), whose sum is σ = 802062418080. Its totient is φ = 531093169152.

The previous prime is 666125611303. The next prime is 666125611387. The reversal of 666125611355 is 553116521666.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666125611355 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 13386461 + ... + 13436129.

It is an arithmetic number, because the mean of its divisors is an integer number (50128901130).

Almost surely, 2^666125611355 is an apocalyptic number.

666125611355 is a deficient number, since it is larger than the sum of its proper divisors (135936806725).

666125611355 is a wasteful number, since it uses less digits than its factorization.

666125611355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58718.

The product of its digits is 972000, while the sum is 47.

The spelling of 666125611355 in words is "six hundred sixty-six billion, one hundred twenty-five million, six hundred eleven thousand, three hundred fifty-five".