79783224769 has 4 divisors (see below), whose sum is σ = 79853893060. Its totient is φ = 79712556480.

The previous prime is 79783224743. The next prime is 79783224791. The reversal of 79783224769 is 96742238797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96742238797 = 3617 ⋅26746541.

It can be written as a sum of positive squares in 2 ways, for example, as 5643014400 + 74140210369 = 75120^2 + 272287^2 .

It is a cyclic number.

It is not a de Polignac number, because 79783224769 - 2¹¹ = 79783222721 is a prime.

It is a super-2 number, since 2×79783224769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79783224769.

It is not an unprimeable number, because it can be changed into a prime (79783224709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35332452 + ... + 35334709.

It is an arithmetic number, because the mean of its divisors is an integer number (19963473265).

Almost surely, 2^79783224769 is an apocalyptic number.

It is an amenable number.

79783224769 is a deficient number, since it is larger than the sum of its proper divisors (70668291).

79783224769 is a wasteful number, since it uses less digits than its factorization.

79783224769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70668290.

The product of its digits is 64012032, while the sum is 64.

The spelling of 79783224769 in words is "seventy-nine billion, seven hundred eighty-three million, two hundred twenty-four thousand, seven hundred sixty-nine".