5661615724 has 12 divisors (see below), whose sum is σ = 9908368848. Its totient is φ = 2830653200.

The previous prime is 5661615721. The next prime is 5661615731. The reversal of 5661615724 is 4275161665.

It is not an unprimeable number, because it can be changed into a prime (5661615721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95169 + ... + 142759.

It is an arithmetic number, because the mean of its divisors is an integer number (825697404).

Almost surely, 2^5661615724 is an apocalyptic number.

It is an amenable number.

5661615724 is a deficient number, since it is larger than the sum of its proper divisors (4246753124).

5661615724 is a wasteful number, since it uses less digits than its factorization.

5661615724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77336 (or 77334 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The square root of 5661615724 is about 75243.7088665890. The cubic root of 5661615724 is about 1782.2972195781.

The spelling of 5661615724 in words is "five billion, six hundred sixty-one million, six hundred fifteen thousand, seven hundred twenty-four".