561342665542461 has 8 divisors (see below), whose sum is σ = 816498422607264. Its totient is φ = 340207676086320.

The previous prime is 561342665542459. The next prime is 561342665542471. The reversal of 561342665542461 is 164245566243165.

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

It is not a de Polignac number, because 561342665542461 - 2¹ = 561342665542459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561342665542395 and 561342665542404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561342665542471) 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, 8505191902126 + ... + 8505191902191.

It is an arithmetic number, because the mean of its divisors is an integer number (102062302825908).

Almost surely, 2^{561342665542461} is an apocalyptic number.

It is an amenable number.

561342665542461 is a deficient number, since it is larger than the sum of its proper divisors (255155757064803).

561342665542461 is a wasteful number, since it uses less digits than its factorization.

561342665542461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17010383804331.

The product of its digits is 124416000, while the sum is 60.

The spelling of 561342665542461 in words is "five hundred sixty-one trillion, three hundred forty-two billion, six hundred sixty-five million, five hundred forty-two thousand, four hundred sixty-one".