16829743661 has 2 divisors, whose sum is σ = 16829743662. Its totient is φ = 16829743660.

The previous prime is 16829743621. The next prime is 16829743663. The reversal of 16829743661 is 16634792861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15175776100 + 1653967561 = 123190^2 + 40669^2 .

It is a cyclic number.

It is not a de Polignac number, because 16829743661 - 2²² = 16825549357 is a prime.

Together with 16829743663, 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 (16829743663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8414871830 + 8414871831.

It is an arithmetic number, because the mean of its divisors is an integer number (8414871831).

Almost surely, 2^16829743661 is an apocalyptic number.

It is an amenable number.

16829743661 is a deficient number, since it is larger than the sum of its proper divisors (1).

16829743661 is an equidigital number, since it uses as much as digits as its factorization.

16829743661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 53.

The spelling of 16829743661 in words is "sixteen billion, eight hundred twenty-nine million, seven hundred forty-three thousand, six hundred sixty-one".