5561728338945 has 32 divisors (see below), whose sum is σ = 9371250806400. Its totient is φ = 2808897606144.

The previous prime is 5561728338931. The next prime is 5561728338953. The reversal of 5561728338945 is 5498338271655.

It is not a de Polignac number, because 5561728338945 - 2⁵ = 5561728338913 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3653652 + ... + 4946981.

It is an arithmetic number, because the mean of its divisors is an integer number (292851587700).

Almost surely, 2^{5561728338945} is an apocalyptic number.

It is an amenable number.

5561728338945 is a deficient number, since it is larger than the sum of its proper divisors (3809522467455).

5561728338945 is a wasteful number, since it uses less digits than its factorization.

5561728338945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8602929.

The product of its digits is 217728000, while the sum is 66.

The spelling of 5561728338945 in words is "five trillion, five hundred sixty-one billion, seven hundred twenty-eight million, three hundred thirty-eight thousand, nine hundred forty-five".