505666270127 has 4 divisors (see below), whose sum is σ = 505721828640. Its totient is φ = 505610711616.

The previous prime is 505666270093. The next prime is 505666270147. The reversal of 505666270127 is 721072666505.

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

It is a cyclic number.

It is not a de Polignac number, because 505666270127 - 2⁶ = 505666270063 is a prime.

It is a super-3 number, since 3×505666270127³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505666270147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27765602 + ... + 27783807.

It is an arithmetic number, because the mean of its divisors is an integer number (126430457160).

Almost surely, 2^505666270127 is an apocalyptic number.

505666270127 is a deficient number, since it is larger than the sum of its proper divisors (55558513).

505666270127 is an equidigital number, since it uses as much as digits as its factorization.

505666270127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55558512.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 505666270127 in words is "five hundred five billion, six hundred sixty-six million, two hundred seventy thousand, one hundred twenty-seven".