72423432233 has 2 divisors, whose sum is σ = 72423432234. Its totient is φ = 72423432232.

The previous prime is 72423432197. The next prime is 72423432251. The reversal of 72423432233 is 33223432427.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71498481664 + 924950569 = 267392^2 + 30413^2 .

It is a cyclic number.

It is not a de Polignac number, because 72423432233 - 2¹⁴ = 72423415849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72423432193 and 72423432202.

It is not a weakly prime, because it can be changed into another prime (72423632233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36211716116 + 36211716117.

It is an arithmetic number, because the mean of its divisors is an integer number (36211716117).

Almost surely, 2^72423432233 is an apocalyptic number.

It is an amenable number.

72423432233 is a deficient number, since it is larger than the sum of its proper divisors (1).

72423432233 is an equidigital number, since it uses as much as digits as its factorization.

72423432233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 35.

The spelling of 72423432233 in words is "seventy-two billion, four hundred twenty-three million, four hundred thirty-two thousand, two hundred thirty-three".