2161230027265 has 8 divisors (see below), whose sum is σ = 2595861941760. Its totient is φ = 1727393415792.

The previous prime is 2161230027259. The next prime is 2161230027289. The reversal of 2161230027265 is 5627200321612.

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 2161230027265 - 2¹³ = 2161230019073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198819775 + ... + 198830644.

It is an arithmetic number, because the mean of its divisors is an integer number (324482742720).

Almost surely, 2^{2161230027265} is an apocalyptic number.

It is an amenable number.

2161230027265 is a deficient number, since it is larger than the sum of its proper divisors (434631914495).

2161230027265 is a wasteful number, since it uses less digits than its factorization.

2161230027265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397651511.

The product of its (nonzero) digits is 60480, while the sum is 37.

Adding to 2161230027265 its reverse (5627200321612), we get a palindrome (7788430348877).

The spelling of 2161230027265 in words is "two trillion, one hundred sixty-one billion, two hundred thirty million, twenty-seven thousand, two hundred sixty-five".