5561722778903 has 8 divisors (see below), whose sum is σ = 5591438706000. Its totient is φ = 5532016117248.

The previous prime is 5561722778893. The next prime is 5561722778947. The reversal of 5561722778903 is 3098772271655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5561722778903 - 2¹⁸ = 5561722516759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561722778203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110953 + ... + 3515346.

It is an arithmetic number, because the mean of its divisors is an integer number (698929838250).

Almost surely, 2^{5561722778903} is an apocalyptic number.

5561722778903 is a deficient number, since it is larger than the sum of its proper divisors (29715927097).

5561722778903 is a wasteful number, since it uses less digits than its factorization.

5561722778903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632721.

The product of its (nonzero) digits is 44452800, while the sum is 62.

The spelling of 5561722778903 in words is "five trillion, five hundred sixty-one billion, seven hundred twenty-two million, seven hundred seventy-eight thousand, nine hundred three".