561677489608 has 8 divisors (see below), whose sum is σ = 1053145293030. Its totient is φ = 280838744800.

The previous prime is 561677489561. The next prime is 561677489623. The reversal of 561677489608 is 806984776165.

It can be written as a sum of positive squares in only one way, i.e., 473148628164 + 88528861444 = 687858^2 + 297538^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35104843093 + ... + 35104843108.

Almost surely, 2^561677489608 is an apocalyptic number.

It is an amenable number.

561677489608 is a deficient number, since it is larger than the sum of its proper divisors (491467803422).

561677489608 is a wasteful number, since it uses less digits than its factorization.

561677489608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70209686207 (or 70209686203 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 67.

The spelling of 561677489608 in words is "five hundred sixty-one billion, six hundred seventy-seven million, four hundred eighty-nine thousand, six hundred eight".