561947935659 has 8 divisors (see below), whose sum is σ = 817378815552. Its totient is φ = 340574506440.

The previous prime is 561947935583. The next prime is 561947935669. The reversal of 561947935659 is 956539749165.

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

It is not a de Polignac number, because 561947935659 - 2¹³ = 561947927467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561947935593 and 561947935602.

It is not an unprimeable number, because it can be changed into a prime (561947935669) 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, 8514362629 + ... + 8514362694.

It is an arithmetic number, because the mean of its divisors is an integer number (102172351944).

Almost surely, 2^561947935659 is an apocalyptic number.

561947935659 is a deficient number, since it is larger than the sum of its proper divisors (255430879893).

561947935659 is a wasteful number, since it uses less digits than its factorization.

561947935659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17028725337.

The product of its digits is 275562000, while the sum is 69.

The spelling of 561947935659 in words is "five hundred sixty-one billion, nine hundred forty-seven million, nine hundred thirty-five thousand, six hundred fifty-nine".