561643532060677 has 8 divisors (see below), whose sum is σ = 613628966957472. Its totient is φ = 509812585827600.

The previous prime is 561643532060579. The next prime is 561643532060687. The reversal of 561643532060677 is 776060235346165.

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 561643532060677 - 2¹⁵ = 561643532027909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561643532060687) 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, 38622158323 + ... + 38622172864.

It is an arithmetic number, because the mean of its divisors is an integer number (76703620869684).

Almost surely, 2^{561643532060677} is an apocalyptic number.

It is an amenable number.

561643532060677 is a deficient number, since it is larger than the sum of its proper divisors (51985434896795).

561643532060677 is a wasteful number, since it uses less digits than its factorization.

561643532060677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77244331859.

The product of its (nonzero) digits is 114307200, while the sum is 61.

The spelling of 561643532060677 in words is "five hundred sixty-one trillion, six hundred forty-three billion, five hundred thirty-two million, sixty thousand, six hundred seventy-seven".