561646405765383 has 8 divisors (see below), whose sum is σ = 781421086282368. Its totient is φ = 358151331212664.

The previous prime is 561646405765343. The next prime is 561646405765433. The reversal of 561646405765383 is 383567504646165.

It is a happy number.

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

It is not a de Polignac number, because 561646405765383 - 2¹⁰ = 561646405764359 is a prime.

It is a super-2 number, since 2×561646405765383² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69), and also a Moran number because the ratio is a prime number: 8139802982107 = 561646405765383 / (5 + 6 + 1 + 6 + 4 + 6 + 4 + 0 + 5 + 7 + 6 + 5 + 3 + 8 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561646405765343) 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, 4069901490985 + ... + 4069901491122.

It is an arithmetic number, because the mean of its divisors is an integer number (97677635785296).

Almost surely, 2^{561646405765383} is an apocalyptic number.

561646405765383 is a deficient number, since it is larger than the sum of its proper divisors (219774680516985).

561646405765383 is a wasteful number, since it uses less digits than its factorization.

561646405765383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8139802982133.

The product of its (nonzero) digits is 1306368000, while the sum is 69.

The spelling of 561646405765383 in words is "five hundred sixty-one trillion, six hundred forty-six billion, four hundred five million, seven hundred sixty-five thousand, three hundred eighty-three".