13980447305 has 32 divisors (see below), whose sum is σ = 19114368768. Its totient is φ = 9716889600.

The previous prime is 13980447289. The next prime is 13980447307. The reversal of 13980447305 is 50374408931.

It is not a de Polignac number, because 13980447305 - 2⁴ = 13980447289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13980447307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1636445 + ... + 1644965.

It is an arithmetic number, because the mean of its divisors is an integer number (597324024).

Almost surely, 2^13980447305 is an apocalyptic number.

It is an amenable number.

13980447305 is a deficient number, since it is larger than the sum of its proper divisors (5133921463).

13980447305 is a wasteful number, since it uses less digits than its factorization.

13980447305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 13980447305 in words is "thirteen billion, nine hundred eighty million, four hundred forty-seven thousand, three hundred five".