787998707899787 has 2 divisors, whose sum is σ = 787998707899788. Its totient is φ = 787998707899786.

The previous prime is 787998707899759. The next prime is 787998707899789.

It is a happy number.

787998707899787 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 787998707899787 - 2⁶ = 787998707899723 is a prime.

Together with 787998707899789, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (787998707899789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393999353949893 + 393999353949894.

It is an arithmetic number, because the mean of its divisors is an integer number (393999353949894).

Almost surely, 2^{787998707899787} is an apocalyptic number.

787998707899787 is a deficient number, since it is larger than the sum of its proper divisors (1).

787998707899787 is an equidigital number, since it uses as much as digits as its factorization.

787998707899787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3161682284544, while the sum is 110.

The spelling of 787998707899787 in words is "seven hundred eighty-seven trillion, nine hundred ninety-eight billion, seven hundred seven million, eight hundred ninety-nine thousand, seven hundred eighty-seven".