79968886997 has 2 divisors, whose sum is σ = 79968886998. Its totient is φ = 79968886996.

The previous prime is 79968886993. The next prime is 79968886999.

79968886997 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77012355121 + 2956531876 = 277511^2 + 54374^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 79968886997 - 2² = 79968886993 is a prime.

Together with 79968886999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79968886993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39984443498 + 39984443499.

It is an arithmetic number, because the mean of its divisors is an integer number (39984443499).

Almost surely, 2^79968886997 is an apocalyptic number.

It is an amenable number.

79968886997 is a deficient number, since it is larger than the sum of its proper divisors (1).

79968886997 is an equidigital number, since it uses as much as digits as its factorization.

79968886997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5925685248, while the sum is 86.

The spelling of 79968886997 in words is "seventy-nine billion, nine hundred sixty-eight million, eight hundred eighty-six thousand, nine hundred ninety-seven".