83247771773 has 4 divisors (see below), whose sum is σ = 83494798140. Its totient is φ = 83000745408.

The previous prime is 83247771769. The next prime is 83247771781. The reversal of 83247771773 is 37717774238.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20628715129 + 62619056644 = 143627^2 + 250238^2 .

It is a cyclic number.

It is not a de Polignac number, because 83247771773 - 2² = 83247771769 is a prime.

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 (83247771703) 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 3 ways as a sum of consecutive naturals, for example, 123512678 + ... + 123513351.

It is an arithmetic number, because the mean of its divisors is an integer number (20873699535).

Almost surely, 2^83247771773 is an apocalyptic number.

It is an amenable number.

83247771773 is a deficient number, since it is larger than the sum of its proper divisors (247026367).

83247771773 is a wasteful number, since it uses less digits than its factorization.

83247771773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247026366.

The product of its digits is 9680832, while the sum is 56.

The spelling of 83247771773 in words is "eighty-three billion, two hundred forty-seven million, seven hundred seventy-one thousand, seven hundred seventy-three".