561055101101 has 8 divisors (see below), whose sum is σ = 618120112608. Its totient is φ = 505000090000.

The previous prime is 561055101091. The next prime is 561055101109. The reversal of 561055101101 is 101101550165.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561055101101 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 (561055101109) 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, 252498935 + ... + 252501156.

It is an arithmetic number, because the mean of its divisors is an integer number (77265014076).

Almost surely, 2^561055101101 is an apocalyptic number.

It is an amenable number.

561055101101 is a deficient number, since it is larger than the sum of its proper divisors (57065011507).

561055101101 is a wasteful number, since it uses less digits than its factorization.

561055101101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505000203.

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 561055101101 its reverse (101101550165), we get a palindrome (662156651266).

The spelling of 561055101101 in words is "five hundred sixty-one billion, fifty-five million, one hundred one thousand, one hundred one".