2086265360881 has 27 divisors (see below), whose sum is σ = 2278511667873. Its totient is φ = 1909369350720.

The previous prime is 2086265360873. The next prime is 2086265360899. The reversal of 2086265360881 is 1880635626802.

The square root of 2086265360881 is 1444391.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 185451670881 + 1900813690000 = 430641^2 + 1378700^2 .

It is not a de Polignac number, because 2086265360881 - 2³ = 2086265360873 is a prime.

It is a super-2 number, since 2×2086265360881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2086265364881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2572459966 + ... + 2572460776.

Almost surely, 2^{2086265360881} is an apocalyptic number.

2086265360881 is the 1444391-st square number.

2086265360881 is the 722196-th centered octagonal number.

It is an amenable number.

2086265360881 is a deficient number, since it is larger than the sum of its proper divisors (192246306992).

2086265360881 is an frugal number, since it uses more digits than its factorization.

2086265360881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 2086265360881 in words is "two trillion, eighty-six billion, two hundred sixty-five million, three hundred sixty thousand, eight hundred eighty-one".