787849380009 has 16 divisors (see below), whose sum is σ = 1235842165440. Its totient is φ = 494336865600.

The previous prime is 787849380001. The next prime is 787849380041. The reversal of 787849380009 is 900083948787.

787849380009 is a `hidden beast` number, since 78 + 78 + 493 + 8 + 0 + 0 + 0 + 9 = 666.

It is not a de Polignac number, because 787849380009 - 2³ = 787849380001 is a prime.

It is a super-3 number, since 3×787849380009³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (787849380001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858223267 + ... + 858224184.

It is an arithmetic number, because the mean of its divisors is an integer number (77240135340).

Almost surely, 2^787849380009 is an apocalyptic number.

It is an amenable number.

787849380009 is a deficient number, since it is larger than the sum of its proper divisors (447992785431).

787849380009 is a wasteful number, since it uses less digits than its factorization.

787849380009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716447477 (or 1716447471 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 787849380009 in words is "seven hundred eighty-seven billion, eight hundred forty-nine million, three hundred eighty thousand, nine".