561051850643 has 8 divisors (see below), whose sum is σ = 563079114336. Its totient is φ = 559024804800.

The previous prime is 561051850607. The next prime is 561051850657. The reversal of 561051850643 is 346058150165.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561051850643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561051850594 and 561051850603.

It is not an unprimeable number, because it can be changed into a prime (561051850243) 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, 6541505 + ... + 6626717.

It is an arithmetic number, because the mean of its divisors is an integer number (70384889292).

Almost surely, 2^561051850643 is an apocalyptic number.

561051850643 is a deficient number, since it is larger than the sum of its proper divisors (2027263693).

561051850643 is a wasteful number, since it uses less digits than its factorization.

561051850643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108925.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 561051850643 in words is "five hundred sixty-one billion, fifty-one million, eight hundred fifty thousand, six hundred forty-three".