561243546431633 has 16 divisors (see below), whose sum is σ = 607385144995776. Its totient is φ = 515526938216640.

The previous prime is 561243546431629. The next prime is 561243546431651. The reversal of 561243546431633 is 336134645342165.

It is a cyclic number.

It is not a de Polignac number, because 561243546431633 - 2² = 561243546431629 is a prime.

It is a super-2 number, since 2×561243546431633² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561243546431833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1654235 + ... + 33544352.

It is an arithmetic number, because the mean of its divisors is an integer number (37961571562236).

Almost surely, 2^{561243546431633} is an apocalyptic number.

It is an amenable number.

561243546431633 is a deficient number, since it is larger than the sum of its proper divisors (46141598564143).

561243546431633 is a wasteful number, since it uses less digits than its factorization.

561243546431633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35204624.

The product of its digits is 55987200, while the sum is 56.

The spelling of 561243546431633 in words is "five hundred sixty-one trillion, two hundred forty-three billion, five hundred forty-six million, four hundred thirty-one thousand, six hundred thirty-three".