42779939733 has 6 divisors (see below), whose sum is σ = 61793246294. Its totient is φ = 28519959816.

The previous prime is 42779939723. The next prime is 42779939737. The reversal of 42779939733 is 33793997724.

42779939733 is a `hidden beast` number, since 427 + 7 + 9 + 93 + 97 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 29440382724 + 13339557009 = 171582^2 + 115497^2 .

It is not a de Polignac number, because 42779939733 - 2¹² = 42779935637 is a prime.

It is a super-2 number, since 2×42779939733² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42779939737) 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 5 ways as a sum of consecutive naturals, for example, 2376663310 + ... + 2376663327.

Almost surely, 2^42779939733 is an apocalyptic number.

It is an amenable number.

42779939733 is a deficient number, since it is larger than the sum of its proper divisors (19013306561).

42779939733 is a wasteful number, since it uses less digits than its factorization.

42779939733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753326643 (or 4753326640 counting only the distinct ones).

The product of its digits is 54010152, while the sum is 63.

The spelling of 42779939733 in words is "forty-two billion, seven hundred seventy-nine million, nine hundred thirty-nine thousand, seven hundred thirty-three".