5616721305 has 64 divisors (see below), whose sum is σ = 11124288000. Its totient is φ = 2669780736.

The previous prime is 5616721291. The next prime is 5616721337. The reversal of 5616721305 is 5031276165.

5616721305 is a `hidden beast` number, since 5 + 616 + 7 + 2 + 1 + 30 + 5 = 666.

It is not a de Polignac number, because 5616721305 - 2⁴ = 5616721289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5616721305.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4285 + ... + 106074.

It is an arithmetic number, because the mean of its divisors is an integer number (173817000).

Almost surely, 2^5616721305 is an apocalyptic number.

It is an amenable number.

5616721305 is a deficient number, since it is larger than the sum of its proper divisors (5507566695).

5616721305 is a wasteful number, since it uses less digits than its factorization.

5616721305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110415 (or 110409 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 5616721305 is about 74944.7883778452. The cubic root of 5616721305 is about 1777.5737369044.

The spelling of 5616721305 in words is "five billion, six hundred sixteen million, seven hundred twenty-one thousand, three hundred five".