79452946009 has 2 divisors, whose sum is σ = 79452946010. Its totient is φ = 79452946008.

The previous prime is 79452945989. The next prime is 79452946031. The reversal of 79452946009 is 90064925497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45466179984 + 33986766025 = 213228^2 + 184355^2 .

It is a cyclic number.

It is not a de Polignac number, because 79452946009 - 2⁵ = 79452945977 is a prime.

It is not a weakly prime, because it can be changed into another prime (79452947009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39726473004 + 39726473005.

It is an arithmetic number, because the mean of its divisors is an integer number (39726473005).

Almost surely, 2^79452946009 is an apocalyptic number.

It is an amenable number.

79452946009 is a deficient number, since it is larger than the sum of its proper divisors (1).

79452946009 is an equidigital number, since it uses as much as digits as its factorization.

79452946009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 79452946009 in words is "seventy-nine billion, four hundred fifty-two million, nine hundred forty-six thousand, nine".