42665706733 has 16 divisors (see below), whose sum is σ = 47237375920. Its totient is φ = 38280439296.

The previous prime is 42665706719. The next prime is 42665706739. The reversal of 42665706733 is 33760756624.

It can be written as a sum of positive squares in 8 ways, for example, as 4401260964 + 38264445769 = 66342^2 + 195613^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42665706733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42665706739) 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 15 ways as a sum of consecutive naturals, for example, 435073 + ... + 524041.

It is an arithmetic number, because the mean of its divisors is an integer number (2952335995).

Almost surely, 2^42665706733 is an apocalyptic number.

It is an amenable number.

42665706733 is a deficient number, since it is larger than the sum of its proper divisors (4571669187).

42665706733 is a wasteful number, since it uses less digits than its factorization.

42665706733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90016.

The product of its (nonzero) digits is 3810240, while the sum is 49.

The spelling of 42665706733 in words is "forty-two billion, six hundred sixty-five million, seven hundred six thousand, seven hundred thirty-three".