83747768733 has 12 divisors (see below), whose sum is σ = 124238432188. Its totient is φ = 54322876800.

The previous prime is 83747768633. The next prime is 83747768743. The reversal of 83747768733 is 33786774738.

83747768733 is a `hidden beast` number, since 8 + 37 + 477 + 68 + 73 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 76896399204 + 6851369529 = 277302^2 + 82773^2 .

It is not a de Polignac number, because 83747768733 - 2³² = 79452801437 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 (83747768743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125747068 + ... + 125747733.

Almost surely, 2^83747768733 is an apocalyptic number.

It is an amenable number.

83747768733 is a deficient number, since it is larger than the sum of its proper divisors (40490663455).

83747768733 is a wasteful number, since it uses less digits than its factorization.

83747768733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251494844 (or 251494841 counting only the distinct ones).

The product of its digits is 99574272, while the sum is 63.

The spelling of 83747768733 in words is "eighty-three billion, seven hundred forty-seven million, seven hundred sixty-eight thousand, seven hundred thirty-three".