729371572123 has 2 divisors, whose sum is σ = 729371572124. Its totient is φ = 729371572122.

The previous prime is 729371572121. The next prime is 729371572133. The reversal of 729371572123 is 321275173927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 729371572123 - 2¹ = 729371572121 is a prime.

Together with 729371572121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (729371572121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364685786061 + 364685786062.

It is an arithmetic number, because the mean of its divisors is an integer number (364685786062).

Almost surely, 2^729371572123 is an apocalyptic number.

729371572123 is a deficient number, since it is larger than the sum of its proper divisors (1).

729371572123 is an equidigital number, since it uses as much as digits as its factorization.

729371572123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 49.

The spelling of 729371572123 in words is "seven hundred twenty-nine billion, three hundred seventy-one million, five hundred seventy-two thousand, one hundred twenty-three".