72276020009 has 2 divisors, whose sum is σ = 72276020010. Its totient is φ = 72276020008.

The previous prime is 72276019993. The next prime is 72276020017. The reversal of 72276020009 is 90002067227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55316688025 + 16959331984 = 235195^2 + 130228^2 .

It is a cyclic number.

It is not a de Polignac number, because 72276020009 - 2⁴ = 72276019993 is a prime.

It is not a weakly prime, because it can be changed into another prime (72276020209) 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, 36138010004 + 36138010005.

It is an arithmetic number, because the mean of its divisors is an integer number (36138010005).

Almost surely, 2^72276020009 is an apocalyptic number.

It is an amenable number.

72276020009 is a deficient number, since it is larger than the sum of its proper divisors (1).

72276020009 is an equidigital number, since it uses as much as digits as its factorization.

72276020009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 72276020009 in words is "seventy-two billion, two hundred seventy-six million, twenty thousand, nine".