561672777305 has 8 divisors (see below), whose sum is σ = 703311999552. Its totient is φ = 429801777328.

The previous prime is 561672777283. The next prime is 561672777311. The reversal of 561672777305 is 503777276165.

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 561672777305 - 2²⁶ = 561605668441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 2442055439 + ... + 2442055668.

It is an arithmetic number, because the mean of its divisors is an integer number (87913999944).

Almost surely, 2^561672777305 is an apocalyptic number.

It is an amenable number.

561672777305 is a deficient number, since it is larger than the sum of its proper divisors (141639222247).

561672777305 is a wasteful number, since it uses less digits than its factorization.

561672777305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884111135.

The product of its (nonzero) digits is 12965400, while the sum is 56.

The spelling of 561672777305 in words is "five hundred sixty-one billion, six hundred seventy-two million, seven hundred seventy-seven thousand, three hundred five".