72181175348323 has 2 divisors, whose sum is σ = 72181175348324. Its totient is φ = 72181175348322.

The previous prime is 72181175348257. The next prime is 72181175348333. The reversal of 72181175348323 is 32384357118127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72181175348323 - 2⁹ = 72181175347811 is a prime.

It is not a weakly prime, because it can be changed into another prime (72181175348333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36090587674161 + 36090587674162.

It is an arithmetic number, because the mean of its divisors is an integer number (36090587674162).

Almost surely, 2^{72181175348323} is an apocalyptic number.

72181175348323 is a deficient number, since it is larger than the sum of its proper divisors (1).

72181175348323 is an equidigital number, since it uses as much as digits as its factorization.

72181175348323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 55.

The spelling of 72181175348323 in words is "seventy-two trillion, one hundred eighty-one billion, one hundred seventy-five million, three hundred forty-eight thousand, three hundred twenty-three".