666051123 has 16 divisors (see below), whose sum is σ = 909532800. Its totient is φ = 433320384.

The previous prime is 666051107. The next prime is 666051157. The reversal of 666051123 is 321150666.

666051123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 666051123 - 2⁴ = 666051107 is a prime.

It is a super-2 number, since 2×666051123² = 887248196899122258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (666051173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245428 + ... + 248126.

It is an arithmetic number, because the mean of its divisors is an integer number (56845800).

Almost surely, 2^666051123 is an apocalyptic number.

666051123 is a deficient number, since it is larger than the sum of its proper divisors (243481677).

666051123 is a wasteful number, since it uses less digits than its factorization.

666051123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 666051123 is about 25807.9662701267. The cubic root of 666051123 is about 873.3115184840.

The spelling of 666051123 in words is "six hundred sixty-six million, fifty-one thousand, one hundred twenty-three".