13668406758 has 24 divisors (see below), whose sum is σ = 29617179696. Its totient is φ = 4555782000.

The previous prime is 13668406723. The next prime is 13668406781. The reversal of 13668406758 is 85760486631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 322608 + ... + 362508.

It is an arithmetic number, because the mean of its divisors is an integer number (1234049154).

Almost surely, 2^13668406758 is an apocalyptic number.

13668406758 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13668406758 is an abundant number, since it is smaller than the sum of its proper divisors (15948772938).

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

13668406758 is a wasteful number, since it uses less digits than its factorization.

13668406758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58940 (or 58937 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 13668406758 in words is "thirteen billion, six hundred sixty-eight million, four hundred six thousand, seven hundred fifty-eight".