1699816669091 has 2 divisors, whose sum is σ = 1699816669092. Its totient is φ = 1699816669090.

The previous prime is 1699816669079. The next prime is 1699816669097. The reversal of 1699816669091 is 1909666189961.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1699816669091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1699816669097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849908334545 + 849908334546.

It is an arithmetic number, because the mean of its divisors is an integer number (849908334546).

Almost surely, 2^{1699816669091} is an apocalyptic number.

1699816669091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1699816669091 is an equidigital number, since it uses as much as digits as its factorization.

1699816669091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68024448, while the sum is 71.

The spelling of 1699816669091 in words is "one trillion, six hundred ninety-nine billion, eight hundred sixteen million, six hundred sixty-nine thousand, ninety-one".