2165134542245 has 8 divisors (see below), whose sum is σ = 2598374435616. Its totient is φ = 1731965643856.

The previous prime is 2165134542227. The next prime is 2165134542269. The reversal of 2165134542245 is 5422454315612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2165134542245 - 2²⁶ = 2165067433381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2165134542196 and 2165134542205.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 17681627 + ... + 17803656.

It is an arithmetic number, because the mean of its divisors is an integer number (324796804452).

Almost surely, 2^{2165134542245} is an apocalyptic number.

It is an amenable number.

2165134542245 is a deficient number, since it is larger than the sum of its proper divisors (433239893371).

2165134542245 is a wasteful number, since it uses less digits than its factorization.

2165134542245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35497491.

The product of its digits is 1152000, while the sum is 44.

Adding to 2165134542245 its reverse (5422454315612), we get a palindrome (7587588857857).

The spelling of 2165134542245 in words is "two trillion, one hundred sixty-five billion, one hundred thirty-four million, five hundred forty-two thousand, two hundred forty-five".