8051472809 has 2 divisors, whose sum is σ = 8051472810. Its totient is φ = 8051472808.

The previous prime is 8051472787. The next prime is 8051472827. The reversal of 8051472809 is 9082741508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6822760000 + 1228712809 = 82600^2 + 35053^2 .

It is a cyclic number.

It is not a de Polignac number, because 8051472809 - 2⁸ = 8051472553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8051472809.

It is not a weakly prime, because it can be changed into another prime (8051472839) 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, 4025736404 + 4025736405.

It is an arithmetic number, because the mean of its divisors is an integer number (4025736405).

Almost surely, 2^8051472809 is an apocalyptic number.

It is an amenable number.

8051472809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8051472809 is an equidigital number, since it uses as much as digits as its factorization.

8051472809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 8051472809 is about 89729.9994929232. Note that the first 3 decimals coincide. The cubic root of 8051472809 is about 2004.2802340138.

The spelling of 8051472809 in words is "eight billion, fifty-one million, four hundred seventy-two thousand, eight hundred nine".