1685016430087 has 2 divisors, whose sum is σ = 1685016430088. Its totient is φ = 1685016430086.

The previous prime is 1685016430039. The next prime is 1685016430133. The reversal of 1685016430087 is 7800346105861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1685016430087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1685016430087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1685016430037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842508215043 + 842508215044.

It is an arithmetic number, because the mean of its divisors is an integer number (842508215044).

Almost surely, 2^{1685016430087} is an apocalyptic number.

1685016430087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685016430087 is an equidigital number, since it uses as much as digits as its factorization.

1685016430087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 1685016430087 in words is "one trillion, six hundred eighty-five billion, sixteen million, four hundred thirty thousand, eighty-seven".