666596229058 has 4 divisors (see below), whose sum is σ = 999894343590. Its totient is φ = 333298114528.

The previous prime is 666596229031. The next prime is 666596229059. The reversal of 666596229058 is 850922695666.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 342478937089 + 324117291969 = 585217^2 + 569313^2 .

It is not an unprimeable number, because it can be changed into a prime (666596229059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166649057263 + ... + 166649057266.

Almost surely, 2^666596229058 is an apocalyptic number.

666596229058 is a deficient number, since it is larger than the sum of its proper divisors (333298114532).

666596229058 is a wasteful number, since it uses less digits than its factorization.

666596229058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333298114531.

The product of its (nonzero) digits is 83980800, while the sum is 64.

The spelling of 666596229058 in words is "six hundred sixty-six billion, five hundred ninety-six million, two hundred twenty-nine thousand, fifty-eight".