5661005013 has 12 divisors (see below), whose sum is σ = 8376446988. Its totient is φ = 3681954240.

The previous prime is 5661005011. The next prime is 5661005029. The reversal of 5661005013 is 3105001665.

It is a happy number.

5661005013 is a `hidden beast` number, since 56 + 6 + 100 + 501 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2781824049 + 2879180964 = 52743^2 + 53658^2 .

It is not a de Polignac number, because 5661005013 - 2¹ = 5661005011 is a prime.

It is a super-2 number, since 2×5661005013² = 64093955514422260338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661005011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7670370 + ... + 7671107.

It is an arithmetic number, because the mean of its divisors is an integer number (698037249).

Almost surely, 2^5661005013 is an apocalyptic number.

It is an amenable number.

5661005013 is a deficient number, since it is larger than the sum of its proper divisors (2715441975).

5661005013 is a wasteful number, since it uses less digits than its factorization.

5661005013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15341524 (or 15341521 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 5661005013 is about 75239.6505374659. The cubic root of 5661005013 is about 1782.2331325925.

Adding to 5661005013 its reverse (3105001665), we get a palindrome (8766006678).

The spelling of 5661005013 in words is "five billion, six hundred sixty-one million, five thousand, thirteen".