16143651709 has 2 divisors, whose sum is σ = 16143651710. Its totient is φ = 16143651708.

The previous prime is 16143651619. The next prime is 16143651743. The reversal of 16143651709 is 90715634161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9448812025 + 6694839684 = 97205^2 + 81822^2 .

It is a cyclic number.

It is not a de Polignac number, because 16143651709 - 2⁷ = 16143651581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16143651409) 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, 8071825854 + 8071825855.

It is an arithmetic number, because the mean of its divisors is an integer number (8071825855).

Almost surely, 2^16143651709 is an apocalyptic number.

It is an amenable number.

16143651709 is a deficient number, since it is larger than the sum of its proper divisors (1).

16143651709 is an equidigital number, since it uses as much as digits as its factorization.

16143651709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 16143651709 in words is "sixteen billion, one hundred forty-three million, six hundred fifty-one thousand, seven hundred nine".