561271016363 has 4 divisors (see below), whose sum is σ = 594286958520. Its totient is φ = 528255074208.

The previous prime is 561271016357. The next prime is 561271016413. The reversal of 561271016363 is 363610172165.

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 561271016363 - 2⁴ = 561271016347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561271016363.

It is not an unprimeable number, because it can be changed into a prime (561271016323) 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 3 ways as a sum of consecutive naturals, for example, 16507971053 + ... + 16507971086.

It is an arithmetic number, because the mean of its divisors is an integer number (148571739630).

Almost surely, 2^561271016363 is an apocalyptic number.

561271016363 is a deficient number, since it is larger than the sum of its proper divisors (33015942157).

561271016363 is a wasteful number, since it uses less digits than its factorization.

561271016363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33015942156.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 561271016363 in words is "five hundred sixty-one billion, two hundred seventy-one million, sixteen thousand, three hundred sixty-three".