2165254285559 has 8 divisors (see below), whose sum is σ = 2184878858448. Its totient is φ = 2145685072320.

The previous prime is 2165254285541. The next prime is 2165254285577. The reversal of 2165254285559 is 9555824525612.

It is an interprime number because it is at equal distance from previous prime (2165254285541) and next prime (2165254285577).

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 2165254285559 - 2²⁰ = 2165253236983 is a prime.

It is a super-2 number, since 2×2165254285559² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2165254285498 and 2165254285507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165254285529) 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 7 ways as a sum of consecutive naturals, for example, 13761332 + ... + 13917785.

It is an arithmetic number, because the mean of its divisors is an integer number (273109857306).

Almost surely, 2^{2165254285559} is an apocalyptic number.

2165254285559 is a deficient number, since it is larger than the sum of its proper divisors (19624572889).

2165254285559 is a wasteful number, since it uses less digits than its factorization.

2165254285559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27679825.

The product of its digits is 43200000, while the sum is 59.

The spelling of 2165254285559 in words is "two trillion, one hundred sixty-five billion, two hundred fifty-four million, two hundred eighty-five thousand, five hundred fifty-nine".