423332552009 has 2 divisors, whose sum is σ = 423332552010. Its totient is φ = 423332552008.

The previous prime is 423332551981. The next prime is 423332552017. The reversal of 423332552009 is 900255233324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314752416784 + 108580135225 = 561028^2 + 329515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423332552009 is a prime.

It is not a weakly prime, because it can be changed into another prime (423332551009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211666276004 + 211666276005.

It is an arithmetic number, because the mean of its divisors is an integer number (211666276005).

Almost surely, 2^423332552009 is an apocalyptic number.

It is an amenable number.

423332552009 is a deficient number, since it is larger than the sum of its proper divisors (1).

423332552009 is an equidigital number, since it uses as much as digits as its factorization.

423332552009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 38.

The spelling of 423332552009 in words is "four hundred twenty-three billion, three hundred thirty-two million, five hundred fifty-two thousand, nine".