561797752809 has 8 divisors (see below), whose sum is σ = 752047988832. Its totient is φ = 373039676000.

The previous prime is 561797752807. The next prime is 561797752811. The reversal of 561797752809 is 908257797165.

It is a happy number.

561797752809 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (561797752807) and next prime (561797752811).

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

It is a cyclic number.

It is not a de Polignac number, because 561797752809 - 2¹ = 561797752807 is a prime.

It is a super-3 number, since 3×561797752809³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 561797752809.

It is not an unprimeable number, because it can be changed into a prime (561797752807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373038924 + ... + 373040429.

It is an arithmetic number, because the mean of its divisors is an integer number (94005998604).

Almost surely, 2^561797752809 is an apocalyptic number.

It is an amenable number.

561797752809 is a deficient number, since it is larger than the sum of its proper divisors (190250236023).

561797752809 is a wasteful number, since it uses less digits than its factorization.

561797752809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746079607.

The product of its (nonzero) digits is 66679200, while the sum is 66.

The spelling of 561797752809 in words is "five hundred sixty-one billion, seven hundred ninety-seven million, seven hundred fifty-two thousand, eight hundred nine".