2135271647 has 2 divisors, whose sum is σ = 2135271648. Its totient is φ = 2135271646.

The previous prime is 2135271643. The next prime is 2135271731. The reversal of 2135271647 is 7461725312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2135271647 - 2² = 2135271643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2135271647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135271643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067635823 + 1067635824.

It is an arithmetic number, because the mean of its divisors is an integer number (1067635824).

Almost surely, 2^2135271647 is an apocalyptic number.

2135271647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135271647 is an equidigital number, since it uses as much as digits as its factorization.

2135271647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 2135271647 is about 46208.9996321063. Note that the first 3 decimals coincide. The cubic root of 2135271647 is about 1287.7089408854.

Adding to 2135271647 its reverse (7461725312), we get a palindrome (9596996959).

The spelling of 2135271647 in words is "two billion, one hundred thirty-five million, two hundred seventy-one thousand, six hundred forty-seven".