2271171064805 has 18 divisors (see below), whose sum is σ = 2849150384934. Its totient is φ = 1737880288144.

The previous prime is 2271171064769. The next prime is 2271171064817. The reversal of 2271171064805 is 5084601711722.

It can be written as a sum of positive squares in only one way, i.e., 1816936851844 + 454234212961 = 1347938^2 + 673969^2 .

It is not a de Polignac number, because 2271171064805 - 2⁸ = 2271171064549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 77491784 + ... + 77521086.

Almost surely, 2^{2271171064805} is an apocalyptic number.

It is an amenable number.

2271171064805 is a deficient number, since it is larger than the sum of its proper divisors (577979320129).

2271171064805 is an frugal number, since it uses more digits than its factorization.

2271171064805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58657 (or 29331 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 2271171064805 in words is "two trillion, two hundred seventy-one billion, one hundred seventy-one million, sixty-four thousand, eight hundred five".