16044691913 has 2 divisors, whose sum is σ = 16044691914. Its totient is φ = 16044691912.

The previous prime is 16044691891. The next prime is 16044691921. The reversal of 16044691913 is 31919644061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10731302464 + 5313389449 = 103592^2 + 72893^2 .

It is a cyclic number.

It is not a de Polignac number, because 16044691913 - 2⁶ = 16044691849 is a prime.

It is not a weakly prime, because it can be changed into another prime (16044691933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8022345956 + 8022345957.

It is an arithmetic number, because the mean of its divisors is an integer number (8022345957).

Almost surely, 2^16044691913 is an apocalyptic number.

It is an amenable number.

16044691913 is a deficient number, since it is larger than the sum of its proper divisors (1).

16044691913 is an equidigital number, since it uses as much as digits as its factorization.

16044691913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 16044691913 in words is "sixteen billion, forty-four million, six hundred ninety-one thousand, nine hundred thirteen".