687363497099119 has 2 divisors, whose sum is σ = 687363497099120. Its totient is φ = 687363497099118.

The previous prime is 687363497099117. The next prime is 687363497099137. The reversal of 687363497099119 is 911990794363786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687363497099119 - 2¹ = 687363497099117 is a prime.

It is a super-2 number, since 2×687363497099119² (a number of 30 digits) contains 22 as substring.

Together with 687363497099117, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687363497099117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343681748549559 + 343681748549560.

It is an arithmetic number, because the mean of its divisors is an integer number (343681748549560).

Almost surely, 2^{687363497099119} is an apocalyptic number.

687363497099119 is a deficient number, since it is larger than the sum of its proper divisors (1).

687363497099119 is an equidigital number, since it uses as much as digits as its factorization.

687363497099119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3333197952, while the sum is 82.

The spelling of 687363497099119 in words is "six hundred eighty-seven trillion, three hundred sixty-three billion, four hundred ninety-seven million, ninety-nine thousand, one hundred nineteen".