2127957047809 has 4 divisors (see below), whose sum is σ = 2128036680880. Its totient is φ = 2127877414740.

The previous prime is 2127957047803. The next prime is 2127957047863. The reversal of 2127957047809 is 9087407597212.

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 2127957047809 - 2¹¹ = 2127957045761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2127957047803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39776439 + ... + 39829900.

It is an arithmetic number, because the mean of its divisors is an integer number (532009170220).

Almost surely, 2^{2127957047809} is an apocalyptic number.

It is an amenable number.

2127957047809 is a deficient number, since it is larger than the sum of its proper divisors (79633071).

2127957047809 is an equidigital number, since it uses as much as digits as its factorization.

2127957047809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79633070.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 2127957047809 in words is "two trillion, one hundred twenty-seven billion, nine hundred fifty-seven million, forty-seven thousand, eight hundred nine".