666146045958 has 16 divisors (see below), whose sum is σ = 1332369941760. Its totient is φ = 222035707016.

The previous prime is 666146045953. The next prime is 666146045987. The reversal of 666146045958 is 859540641666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666146045951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3132210 + ... + 3338117.

It is an arithmetic number, because the mean of its divisors is an integer number (83273121360).

Almost surely, 2^666146045958 is an apocalyptic number.

666146045958 is an abundant number, since it is smaller than the sum of its proper divisors (666223895802).

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

666146045958 is a wasteful number, since it uses less digits than its factorization.

666146045958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487491.

The product of its (nonzero) digits is 37324800, while the sum is 60.

The spelling of 666146045958 in words is "six hundred sixty-six billion, one hundred forty-six million, forty-five thousand, nine hundred fifty-eight".