79798788789797 has 32 divisors (see below), whose sum is σ = 99972568001280. Its totient is φ = 61879158558720.

The previous prime is 79798788789761. The next prime is 79798788789809.

It is a happy number.

79798788789797 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 79798788789797 - 2²⁰ = 79798787741221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79798788789397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35098373 + ... + 37302725.

It is an arithmetic number, because the mean of its divisors is an integer number (3124142750040).

Almost surely, 2^{79798788789797} is an apocalyptic number.

79798788789797 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

79798788789797 is a deficient number, since it is larger than the sum of its proper divisors (20173779211483).

79798788789797 is a wasteful number, since it uses less digits than its factorization.

79798788789797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206653.

The product of its digits is 3161682284544, while the sum is 110.

The spelling of 79798788789797 in words is "seventy-nine trillion, seven hundred ninety-eight billion, seven hundred eighty-eight million, seven hundred eighty-nine thousand, seven hundred ninety-seven".