16326001001 has 2 divisors, whose sum is σ = 16326001002. Its totient is φ = 16326001000.

The previous prime is 16326000961. The next prime is 16326001091. The reversal of 16326001001 is 10010062361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16097265625 + 228735376 = 126875^2 + 15124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16326001001 is a prime.

It is not a weakly prime, because it can be changed into another prime (16326001091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8163000500 + 8163000501.

It is an arithmetic number, because the mean of its divisors is an integer number (8163000501).

Almost surely, 2^16326001001 is an apocalyptic number.

It is an amenable number.

16326001001 is a deficient number, since it is larger than the sum of its proper divisors (1).

16326001001 is an equidigital number, since it uses as much as digits as its factorization.

16326001001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 16326001001 its reverse (10010062361), we get a palindrome (26336063362).

The spelling of 16326001001 in words is "sixteen billion, three hundred twenty-six million, one thousand, one".