79807368859 has 2 divisors, whose sum is σ = 79807368860. Its totient is φ = 79807368858.

The previous prime is 79807368857. The next prime is 79807368863. The reversal of 79807368859 is 95886370897.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79807368859 - 2¹ = 79807368857 is a prime.

It is a super-2 number, since 2×79807368859² (a number of 23 digits) contains 22 as substring.

Together with 79807368857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79807368857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39903684429 + 39903684430.

It is an arithmetic number, because the mean of its divisors is an integer number (39903684430).

Almost surely, 2^79807368859 is an apocalyptic number.

79807368859 is a deficient number, since it is larger than the sum of its proper divisors (1).

79807368859 is an equidigital number, since it uses as much as digits as its factorization.

79807368859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 182891520, while the sum is 70.

The spelling of 79807368859 in words is "seventy-nine billion, eight hundred seven million, three hundred sixty-eight thousand, eight hundred fifty-nine".