72229435723 has 2 divisors, whose sum is σ = 72229435724. Its totient is φ = 72229435722.

The previous prime is 72229435721. The next prime is 72229435739. The reversal of 72229435723 is 32753492227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72229435723 - 2¹ = 72229435721 is a prime.

Together with 72229435721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72229435721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36114717861 + 36114717862.

It is an arithmetic number, because the mean of its divisors is an integer number (36114717862).

Almost surely, 2^72229435723 is an apocalyptic number.

72229435723 is a deficient number, since it is larger than the sum of its proper divisors (1).

72229435723 is an equidigital number, since it uses as much as digits as its factorization.

72229435723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 46.

The spelling of 72229435723 in words is "seventy-two billion, two hundred twenty-nine million, four hundred thirty-five thousand, seven hundred twenty-three".