72164446111 has 2 divisors, whose sum is σ = 72164446112. Its totient is φ = 72164446110.

The previous prime is 72164446093. The next prime is 72164446141. The reversal of 72164446111 is 11164446127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72164446111 - 2⁹ = 72164445599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72164446141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36082223055 + 36082223056.

It is an arithmetic number, because the mean of its divisors is an integer number (36082223056).

Almost surely, 2^72164446111 is an apocalyptic number.

72164446111 is a deficient number, since it is larger than the sum of its proper divisors (1).

72164446111 is an equidigital number, since it uses as much as digits as its factorization.

72164446111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The spelling of 72164446111 in words is "seventy-two billion, one hundred sixty-four million, four hundred forty-six thousand, one hundred eleven".