5661360731 has 16 divisors (see below), whose sum is σ = 6219339840. Its totient is φ = 5121118080.

The previous prime is 5661360721. The next prime is 5661360739. The reversal of 5661360731 is 1370631665.

It is not a de Polignac number, because 5661360731 - 2⁶ = 5661360667 is a prime.

It is a super-2 number, since 2×5661360731² = 64102010653017708722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661360739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 628721 + ... + 637661.

It is an arithmetic number, because the mean of its divisors is an integer number (388708740).

Almost surely, 2^5661360731 is an apocalyptic number.

5661360731 is a deficient number, since it is larger than the sum of its proper divisors (557979109).

5661360731 is a wasteful number, since it uses less digits than its factorization.

5661360731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9926.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 5661360731 is about 75242.0144002006. The cubic root of 5661360731 is about 1782.2704616018.

The spelling of 5661360731 in words is "five billion, six hundred sixty-one million, three hundred sixty thousand, seven hundred thirty-one".