16011061901 has 2 divisors, whose sum is σ = 16011061902. Its totient is φ = 16011061900.

The previous prime is 16011061817. The next prime is 16011061903. The reversal of 16011061901 is 10916011061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13254916900 + 2756145001 = 115130^2 + 52499^2 .

It is a cyclic number.

It is not a de Polignac number, because 16011061901 - 2¹⁸ = 16010799757 is a prime.

Together with 16011061903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16011061903) 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, 8005530950 + 8005530951.

It is an arithmetic number, because the mean of its divisors is an integer number (8005530951).

Almost surely, 2^16011061901 is an apocalyptic number.

It is an amenable number.

16011061901 is a deficient number, since it is larger than the sum of its proper divisors (1).

16011061901 is an equidigital number, since it uses as much as digits as its factorization.

16011061901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 26.

Adding to 16011061901 its reverse (10916011061), we get a palindrome (26927072962).

The spelling of 16011061901 in words is "sixteen billion, eleven million, sixty-one thousand, nine hundred one".