561643532060678 has 8 divisors (see below), whose sum is σ = 842636079637968. Its totient is φ = 280764838848024.

The previous prime is 561643532060579. The next prime is 561643532060687. The reversal of 561643532060678 is 876060235346165.

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

It is a self number, because there is not a number n which added to its sum of digits gives 561643532060678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28463578826 + ... + 28463598557.

It is an arithmetic number, because the mean of its divisors is an integer number (105329509954746).

Almost surely, 2^{561643532060678} is an apocalyptic number.

561643532060678 is a deficient number, since it is larger than the sum of its proper divisors (280992547577290).

561643532060678 is a wasteful number, since it uses less digits than its factorization.

561643532060678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56927182318.

The product of its (nonzero) digits is 130636800, while the sum is 62.

The spelling of 561643532060678 in words is "five hundred sixty-one trillion, six hundred forty-three billion, five hundred thirty-two million, sixty thousand, six hundred seventy-eight".