561544522406601 has 64 divisors (see below), whose sum is σ = 782825697509376. Its totient is φ = 357645549312000.

The previous prime is 561544522406591. The next prime is 561544522406729. The reversal of 561544522406601 is 106604225445165.

It is not a de Polignac number, because 561544522406601 - 2⁶ = 561544522406537 is a prime.

It is a super-2 number, since 2×561544522406601² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561544522416601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19052831001 + ... + 19052860473.

It is an arithmetic number, because the mean of its divisors is an integer number (12231651523584).

Almost surely, 2^{561544522406601} is an apocalyptic number.

It is an amenable number.

561544522406601 is a deficient number, since it is larger than the sum of its proper divisors (221281175102775).

561544522406601 is a wasteful number, since it uses less digits than its factorization.

561544522406601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35502.

The product of its (nonzero) digits is 6912000, while the sum is 51.

The spelling of 561544522406601 in words is "five hundred sixty-one trillion, five hundred forty-four billion, five hundred twenty-two million, four hundred six thousand, six hundred one".