72423547243 has 2 divisors, whose sum is σ = 72423547244. Its totient is φ = 72423547242.

The previous prime is 72423547223. The next prime is 72423547249. The reversal of 72423547243 is 34274532427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72423547243 - 2⁹ = 72423546731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72423547243.

It is not a weakly prime, because it can be changed into another prime (72423547249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36211773621 + 36211773622.

It is an arithmetic number, because the mean of its divisors is an integer number (36211773622).

Almost surely, 2^72423547243 is an apocalyptic number.

72423547243 is a deficient number, since it is larger than the sum of its proper divisors (1).

72423547243 is an equidigital number, since it uses as much as digits as its factorization.

72423547243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 43.

The spelling of 72423547243 in words is "seventy-two billion, four hundred twenty-three million, five hundred forty-seven thousand, two hundred forty-three".