2261066045 has 24 divisors (see below), whose sum is σ = 3341932344. Its totient is φ = 1459239936.

The previous prime is 2261066021. The next prime is 2261066051. The reversal of 2261066045 is 5406601622.

It can be written as a sum of positive squares in 4 ways, for example, as 542051524 + 1719014521 = 23282^2 + 41461^2 .

It is not a de Polignac number, because 2261066045 - 2⁸ = 2261065789 is a prime.

It is a super-2 number, since 2×2261066045² = 10224839319703884050, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 267272 + ... + 275601.

It is an arithmetic number, because the mean of its divisors is an integer number (139247181).

Almost surely, 2^2261066045 is an apocalyptic number.

It is an amenable number.

2261066045 is a deficient number, since it is larger than the sum of its proper divisors (1080866299).

2261066045 is a wasteful number, since it uses less digits than its factorization.

2261066045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542909 (or 542902 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2261066045 is about 47550.6681866827. The cubic root of 2261066045 is about 1312.5154250039.

Adding to 2261066045 its reverse (5406601622), we get a palindrome (7667667667).

The spelling of 2261066045 in words is "two billion, two hundred sixty-one million, sixty-six thousand, forty-five".