127338205173 has 4 divisors (see below), whose sum is σ = 169784273568. Its totient is φ = 84892136780.

The previous prime is 127338205171. The next prime is 127338205193. The reversal of 127338205173 is 371502833721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 127338205173 - 2¹ = 127338205171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127338205171) 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, 21223034193 + ... + 21223034198.

It is an arithmetic number, because the mean of its divisors is an integer number (42446068392).

Almost surely, 2^127338205173 is an apocalyptic number.

It is an amenable number.

127338205173 is a deficient number, since it is larger than the sum of its proper divisors (42446068395).

127338205173 is an equidigital number, since it uses as much as digits as its factorization.

127338205173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42446068394.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 127338205173 in words is "one hundred twenty-seven billion, three hundred thirty-eight million, two hundred five thousand, one hundred seventy-three".