13478820605 has 8 divisors (see below), whose sum is σ = 16210611000. Its totient is φ = 10759038976.

The previous prime is 13478820541. The next prime is 13478820611. The reversal of 13478820605 is 50602887431.

It can be written as a sum of positive squares in 4 ways, for example, as 592484281 + 12886336324 = 24341^2 + 113518^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13478820605 - 2⁶ = 13478820541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2999720 + ... + 3004209.

It is an arithmetic number, because the mean of its divisors is an integer number (2026326375).

Almost surely, 2^13478820605 is an apocalyptic number.

It is an amenable number.

13478820605 is a deficient number, since it is larger than the sum of its proper divisors (2731790395).

13478820605 is an equidigital number, since it uses as much as digits as its factorization.

13478820605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004383.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 13478820605 in words is "thirteen billion, four hundred seventy-eight million, eight hundred twenty thousand, six hundred five".