561913478935 has 16 divisors (see below), whose sum is σ = 713987116992. Its totient is φ = 423072115200.

The previous prime is 561913478933. The next prime is 561913478939. The reversal of 561913478935 is 539874319165.

It is a happy number.

It is not a de Polignac number, because 561913478935 - 2¹ = 561913478933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561913478933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2516965 + ... + 2731105.

It is an arithmetic number, because the mean of its divisors is an integer number (44624194812).

Almost surely, 2^561913478935 is an apocalyptic number.

561913478935 is a deficient number, since it is larger than the sum of its proper divisors (152073638057).

561913478935 is a wasteful number, since it uses less digits than its factorization.

561913478935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245034.

The product of its digits is 24494400, while the sum is 61.

The spelling of 561913478935 in words is "five hundred sixty-one billion, nine hundred thirteen million, four hundred seventy-eight thousand, nine hundred thirty-five".