666134126613 has 128 divisors (see below), whose sum is σ = 1134555724800. Its totient is φ = 383746277376.

The previous prime is 666134126611. The next prime is 666134126629. The reversal of 666134126613 is 316621431666.

It is not a de Polignac number, because 666134126613 - 2¹ = 666134126611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666134126611) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 52958181 + ... + 52970757.

It is an arithmetic number, because the mean of its divisors is an integer number (8863716600).

Almost surely, 2^666134126613 is an apocalyptic number.

It is an amenable number.

666134126613 is a deficient number, since it is larger than the sum of its proper divisors (468421598187).

666134126613 is a wasteful number, since it uses less digits than its factorization.

666134126613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12828 (or 12822 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The spelling of 666134126613 in words is "six hundred sixty-six billion, one hundred thirty-four million, one hundred twenty-six thousand, six hundred thirteen".