79863716069 has 2 divisors, whose sum is σ = 79863716070. Its totient is φ = 79863716068.

The previous prime is 79863716029. The next prime is 79863716071. The reversal of 79863716069 is 96061736897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59660505025 + 20203211044 = 244255^2 + 142138^2 .

It is a cyclic number.

It is not a de Polignac number, because 79863716069 - 2¹² = 79863711973 is a prime.

It is a super-2 number, since 2×79863716069² (a number of 23 digits) contains 22 as substring.

Together with 79863716071, 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 (79863716029) 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 as a sum of consecutive naturals, namely, 39931858034 + 39931858035.

It is an arithmetic number, because the mean of its divisors is an integer number (39931858035).

Almost surely, 2^79863716069 is an apocalyptic number.

It is an amenable number.

79863716069 is a deficient number, since it is larger than the sum of its proper divisors (1).

79863716069 is an equidigital number, since it uses as much as digits as its factorization.

79863716069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20575296, while the sum is 62.

The spelling of 79863716069 in words is "seventy-nine billion, eight hundred sixty-three million, seven hundred sixteen thousand, sixty-nine".