1687299951119 has 2 divisors, whose sum is σ = 1687299951120. Its totient is φ = 1687299951118.

The previous prime is 1687299951089. The next prime is 1687299951131. The reversal of 1687299951119 is 9111599927861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1687299951119 is a prime.

It is a super-3 number, since 3×1687299951119³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1687299951199) 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, 843649975559 + 843649975560.

It is an arithmetic number, because the mean of its divisors is an integer number (843649975560).

Almost surely, 2^{1687299951119} is an apocalyptic number.

1687299951119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1687299951119 is an equidigital number, since it uses as much as digits as its factorization.

1687299951119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22044960, while the sum is 68.

The spelling of 1687299951119 in words is "one trillion, six hundred eighty-seven billion, two hundred ninety-nine million, nine hundred fifty-one thousand, one hundred nineteen".