5991360561 has 16 divisors (see below), whose sum is σ = 8983033920. Its totient is φ = 3946115520.

The previous prime is 5991360539. The next prime is 5991360563. The reversal of 5991360561 is 1650631995.

5991360561 is a `hidden beast` number, since 59 + 9 + 1 + 36 + 0 + 561 = 666.

It is not a de Polignac number, because 5991360561 - 2⁷ = 5991360433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5991360563) 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, 1334520 + ... + 1339001.

It is an arithmetic number, because the mean of its divisors is an integer number (561439620).

Almost surely, 2^5991360561 is an apocalyptic number.

It is an amenable number.

5991360561 is a deficient number, since it is larger than the sum of its proper divisors (2991673359).

5991360561 is a wasteful number, since it uses less digits than its factorization.

5991360561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673613 (or 2673607 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 5991360561 is about 77403.8794957979. The cubic root of 5991360561 is about 1816.2480126358.

The spelling of 5991360561 in words is "five billion, nine hundred ninety-one million, three hundred sixty thousand, five hundred sixty-one".