2165071617047 has 2 divisors, whose sum is σ = 2165071617048. Its totient is φ = 2165071617046.

The previous prime is 2165071617019. The next prime is 2165071617083. The reversal of 2165071617047 is 7407161705612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2165071617047 - 2¹⁰ = 2165071616023 is a prime.

It is a super-2 number, since 2×2165071617047² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2165071616992 and 2165071617010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165071617647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082535808523 + 1082535808524.

It is an arithmetic number, because the mean of its divisors is an integer number (1082535808524).

Almost surely, 2^{2165071617047} is an apocalyptic number.

2165071617047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165071617047 is an equidigital number, since it uses as much as digits as its factorization.

2165071617047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 2165071617047 in words is "two trillion, one hundred sixty-five billion, seventy-one million, six hundred seventeen thousand, forty-seven".