561103035551 has 8 divisors (see below), whose sum is σ = 582403156608. Its totient is φ = 540002916000.

The previous prime is 561103035541. The next prime is 561103035553. The reversal of 561103035551 is 155530301165.

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 561103035551 - 2²⁶ = 561035926687 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 (561103035553) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 49994660 + ... + 50005881.

It is an arithmetic number, because the mean of its divisors is an integer number (72800394576).

Almost surely, 2^561103035551 is an apocalyptic number.

561103035551 is a deficient number, since it is larger than the sum of its proper divisors (21300121057).

561103035551 is a wasteful number, since it uses less digits than its factorization.

561103035551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100000753.

The product of its (nonzero) digits is 33750, while the sum is 35.

The spelling of 561103035551 in words is "five hundred sixty-one billion, one hundred three million, thirty-five thousand, five hundred fifty-one".