42066449613 has 12 divisors (see below), whose sum is σ = 60894461628. Its totient is φ = 27983463360.

The previous prime is 42066449611. The next prime is 42066449617. The reversal of 42066449613 is 31694466024.

42066449613 is a `hidden beast` number, since 4 + 20 + 6 + 6 + 4 + 4 + 9 + 613 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21857552649 + 20208896964 = 147843^2 + 142158^2 .

It is not a de Polignac number, because 42066449613 - 2¹ = 42066449611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42066449611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5065320 + ... + 5073617.

It is an arithmetic number, because the mean of its divisors is an integer number (5074538469).

Almost surely, 2^42066449613 is an apocalyptic number.

It is an amenable number.

42066449613 is a deficient number, since it is larger than the sum of its proper divisors (18828012015).

42066449613 is a wasteful number, since it uses less digits than its factorization.

42066449613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10139404 (or 10139401 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 42066449613 in words is "forty-two billion, sixty-six million, four hundred forty-nine thousand, six hundred thirteen".