561545641413 has 8 divisors (see below), whose sum is σ = 831919468800. Its totient is φ = 374363760924.

The previous prime is 561545641387. The next prime is 561545641429. The reversal of 561545641413 is 314146545165.

561545641413 is a `hidden beast` number, since 5 + 6 + 1 + 545 + 64 + 1 + 41 + 3 = 666.

It is not a de Polignac number, because 561545641413 - 2¹³ = 561545633221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561545641313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10398993333 + ... + 10398993386.

It is an arithmetic number, because the mean of its divisors is an integer number (103989933600).

Almost surely, 2^561545641413 is an apocalyptic number.

It is an amenable number.

561545641413 is a deficient number, since it is larger than the sum of its proper divisors (270373827387).

561545641413 is a wasteful number, since it uses less digits than its factorization.

561545641413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20797986728 (or 20797986722 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 561545641413 in words is "five hundred sixty-one billion, five hundred forty-five million, six hundred forty-one thousand, four hundred thirteen".