13317021478 has 8 divisors (see below), whose sum is σ = 20619904320. Its totient is φ = 6443720040.

The previous prime is 13317021427. The next prime is 13317021491. The reversal of 13317021478 is 87412071331.

It is a happy number.

13317021478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13317021478² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107395273 + ... + 107395396.

It is an arithmetic number, because the mean of its divisors is an integer number (2577488040).

Almost surely, 2^13317021478 is an apocalyptic number.

13317021478 is a deficient number, since it is larger than the sum of its proper divisors (7302882842).

13317021478 is a wasteful number, since it uses less digits than its factorization.

13317021478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214790702.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 13317021478 in words is "thirteen billion, three hundred seventeen million, twenty-one thousand, four hundred seventy-eight".