561045766103 has 4 divisors (see below), whose sum is σ = 561656262960. Its totient is φ = 560435269248.

The previous prime is 561045766079. The next prime is 561045766109. The reversal of 561045766103 is 301667540165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561045766103 - 2¹⁰ = 561045765079 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 (561045766109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305247050 + ... + 305248887.

It is an arithmetic number, because the mean of its divisors is an integer number (140414065740).

Almost surely, 2^561045766103 is an apocalyptic number.

561045766103 is a deficient number, since it is larger than the sum of its proper divisors (610496857).

561045766103 is an equidigital number, since it uses as much as digits as its factorization.

561045766103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610496856.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 561045766103 in words is "five hundred sixty-one billion, forty-five million, seven hundred sixty-six thousand, one hundred three".