16544144731 has 2 divisors, whose sum is σ = 16544144732. Its totient is φ = 16544144730.

The previous prime is 16544144717. The next prime is 16544144741. The reversal of 16544144731 is 13744144561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16544144731 - 2¹¹ = 16544142683 is a prime.

It is a super-2 number, since 2×16544144731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16544144741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272072365 + 8272072366.

It is an arithmetic number, because the mean of its divisors is an integer number (8272072366).

Almost surely, 2^16544144731 is an apocalyptic number.

16544144731 is a deficient number, since it is larger than the sum of its proper divisors (1).

16544144731 is an equidigital number, since it uses as much as digits as its factorization.

16544144731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The spelling of 16544144731 in words is "sixteen billion, five hundred forty-four million, one hundred forty-four thousand, seven hundred thirty-one".