72443611 has 2 divisors, whose sum is σ = 72443612. Its totient is φ = 72443610.

The previous prime is 72443593. The next prime is 72443639. The reversal of 72443611 is 11634427.

It is an a-pointer prime, because the next prime (72443639) can be obtained adding 72443611 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72443611 - 2²³ = 64055003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72443611.

It is not a weakly prime, because it can be changed into another prime (72443671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36221805 + 36221806.

It is an arithmetic number, because the mean of its divisors is an integer number (36221806).

Almost surely, 2^72443611 is an apocalyptic number.

72443611 is a deficient number, since it is larger than the sum of its proper divisors (1).

72443611 is an equidigital number, since it uses as much as digits as its factorization.

72443611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 72443611 is about 8511.3812627564. The cubic root of 72443611 is about 416.8694122279.

The spelling of 72443611 in words is "seventy-two million, four hundred forty-three thousand, six hundred eleven".