13671643020 has 48 divisors (see below), whose sum is σ = 43749259008. Its totient is φ = 3124946880.

The previous prime is 13671643019. The next prime is 13671643099. The reversal of 13671643020 is 2034617631.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16275346 + ... + 16276185.

It is an arithmetic number, because the mean of its divisors is an integer number (911442896).

Almost surely, 2^13671643020 is an apocalyptic number.

13671643020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13671643020 is an abundant number, since it is smaller than the sum of its proper divisors (30077615988).

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

13671643020 is a wasteful number, since it uses less digits than its factorization.

13671643020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32551550 (or 32551548 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The spelling of 13671643020 in words is "thirteen billion, six hundred seventy-one million, six hundred forty-three thousand, twenty".