13335665640 has 128 divisors (see below), whose sum is σ = 46211368320. Its totient is φ = 3042713600.

The previous prime is 13335665599. The next prime is 13335665647. The reversal of 13335665640 is 4656653331.

It is a junction number, because it is equal to n+sod(n) for n = 13335665592 and 13335665601.

It is not an unprimeable number, because it can be changed into a prime (13335665647) 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, 274701 + ... + 319580.

It is an arithmetic number, because the mean of its divisors is an integer number (361026315).

Almost surely, 2^13335665640 is an apocalyptic number.

13335665640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13335665640 is an abundant number, since it is smaller than the sum of its proper divisors (32875702680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13335665640 is a wasteful number, since it uses less digits than its factorization.

13335665640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594323 (or 594319 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 42.

The spelling of 13335665640 in words is "thirteen billion, three hundred thirty-five million, six hundred sixty-five thousand, six hundred forty".