2071165261 has 8 divisors (see below), whose sum is σ = 2259782784. Its totient is φ = 1882602720.

The previous prime is 2071165259. The next prime is 2071165289. The reversal of 2071165261 is 1625611702.

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 2071165261 - 2¹ = 2071165259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071165241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136140 + ... + 150586.

It is an arithmetic number, because the mean of its divisors is an integer number (282472848).

Almost surely, 2^2071165261 is an apocalyptic number.

It is an amenable number.

2071165261 is a deficient number, since it is larger than the sum of its proper divisors (188617523).

2071165261 is a wasteful number, since it uses less digits than its factorization.

2071165261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27491.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 2071165261 is about 45510.0567017885. The cubic root of 2071165261 is about 1274.6909949102.

Adding to 2071165261 its reverse (1625611702), we get a palindrome (3696776963).

The spelling of 2071165261 in words is "two billion, seventy-one million, one hundred sixty-five thousand, two hundred sixty-one".