13787865009 has 32 divisors (see below), whose sum is σ = 21812505600. Its totient is φ = 8588643840.

The previous prime is 13787864971. The next prime is 13787865017. The reversal of 13787865009 is 90056878731.

It is not a de Polignac number, because 13787865009 - 2¹¹ = 13787862961 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13787865029) 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 in 31 ways as a sum of consecutive naturals, for example, 259744 + ... + 308289.

It is an arithmetic number, because the mean of its divisors is an integer number (681640800).

Almost surely, 2^13787865009 is an apocalyptic number.

It is an amenable number.

13787865009 is a deficient number, since it is larger than the sum of its proper divisors (8024640591).

13787865009 is a wasteful number, since it uses less digits than its factorization.

13787865009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568102 (or 568096 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 13787865009 in words is "thirteen billion, seven hundred eighty-seven million, eight hundred sixty-five thousand, nine".