666506550119 has 8 divisors (see below), whose sum is σ = 676888417920. Its totient is φ = 656137447416.

The previous prime is 666506550089. The next prime is 666506550121. The reversal of 666506550119 is 911055605666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666506550119 is a prime.

It is a super-2 number, since 2×666506550119² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666506550419) 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, 3086009 + ... + 3294914.

It is an arithmetic number, because the mean of its divisors is an integer number (84611052240).

Almost surely, 2^666506550119 is an apocalyptic number.

666506550119 is a deficient number, since it is larger than the sum of its proper divisors (10381867801).

666506550119 is a wasteful number, since it uses less digits than its factorization.

666506550119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6382549.

The product of its (nonzero) digits is 1458000, while the sum is 50.

The spelling of 666506550119 in words is "six hundred sixty-six billion, five hundred six million, five hundred fifty thousand, one hundred nineteen".