79164837199873 has 2 divisors, whose sum is σ = 79164837199874. Its totient is φ = 79164837199872.

The previous prime is 79164837199871. The next prime is 79164837199891. The reversal of 79164837199873 is 37899173846197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55665446621184 + 23499390578689 = 7460928^2 + 4847617^2 .

It is a cyclic number.

It is not a de Polignac number, because 79164837199873 - 2¹ = 79164837199871 is a prime.

It is a super-2 number, since 2×79164837199873² (a number of 29 digits) contains 22 as substring.

Together with 79164837199871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79164837199871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a Pierpont prime, being equal to 2⁴³ ⋅ 3² + 1.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39582418599936 + 39582418599937.

It is an arithmetic number, because the mean of its divisors is an integer number (39582418599937).

It is a Proth number, since it is equal to 9 ⋅ 2⁴³ + 1 and 9 < 2⁴³.

Almost surely, 2^{79164837199873} is an apocalyptic number.

It is an amenable number.

79164837199873 is a deficient number, since it is larger than the sum of its proper divisors (1).

79164837199873 is an equidigital number, since it uses as much as digits as its factorization.

79164837199873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456649728, while the sum is 82.

The spelling of 79164837199873 in words is "seventy-nine trillion, one hundred sixty-four billion, eight hundred thirty-seven million, one hundred ninety-nine thousand, eight hundred seventy-three".