72216043 has 2 divisors, whose sum is σ = 72216044. Its totient is φ = 72216042.

The previous prime is 72216041. The next prime is 72216071. The reversal of 72216043 is 34061227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72216043 - 2¹ = 72216041 is a prime.

Together with 72216041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 72215999 and 72216017.

It is not a weakly prime, because it can be changed into another prime (72216041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36108021 + 36108022.

It is an arithmetic number, because the mean of its divisors is an integer number (36108022).

Almost surely, 2^72216043 is an apocalyptic number.

72216043 is a deficient number, since it is larger than the sum of its proper divisors (1).

72216043 is an equidigital number, since it uses as much as digits as its factorization.

72216043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 72216043 is about 8498.0022946573. The cubic root of 72216043 is about 416.4324487031.

The spelling of 72216043 in words is "seventy-two million, two hundred sixteen thousand, forty-three".