72447547163 has 2 divisors, whose sum is σ = 72447547164. Its totient is φ = 72447547162.

The previous prime is 72447547097. The next prime is 72447547223. The reversal of 72447547163 is 36174574427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72447547163 - 2¹² = 72447543067 is a prime.

It is not a weakly prime, because it can be changed into another prime (72447547363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36223773581 + 36223773582.

It is an arithmetic number, because the mean of its divisors is an integer number (36223773582).

Almost surely, 2^72447547163 is an apocalyptic number.

72447547163 is a deficient number, since it is larger than the sum of its proper divisors (1).

72447547163 is an equidigital number, since it uses as much as digits as its factorization.

72447547163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3951360, while the sum is 50.

The spelling of 72447547163 in words is "seventy-two billion, four hundred forty-seven million, five hundred forty-seven thousand, one hundred sixty-three".