13468668640 has 48 divisors (see below), whose sum is σ = 36365408352. Its totient is φ = 4617828864.

The previous prime is 13468668637. The next prime is 13468668649. The reversal of 13468668640 is 4686686431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13468668649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6011679 + ... + 6013918.

It is an arithmetic number, because the mean of its divisors is an integer number (757612674).

Almost surely, 2^13468668640 is an apocalyptic number.

13468668640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13468668640 is an abundant number, since it is smaller than the sum of its proper divisors (22896739712).

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

13468668640 is a wasteful number, since it uses less digits than its factorization.

13468668640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12025619 (or 12025611 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 13468668640 in words is "thirteen billion, four hundred sixty-eight million, six hundred sixty-eight thousand, six hundred forty".