13640220832 has 48 divisors (see below), whose sum is σ = 30709748160. Its totient is φ = 5842142208.

The previous prime is 13640220799. The next prime is 13640220889. The reversal of 13640220832 is 23802204631.

It is a junction number, because it is equal to n+sod(n) for n = 13640220794 and 13640220803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355144 + ... + 391672.

It is an arithmetic number, because the mean of its divisors is an integer number (639786420).

Almost surely, 2^13640220832 is an apocalyptic number.

It is an amenable number.

13640220832 is an abundant number, since it is smaller than the sum of its proper divisors (17069527328).

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

13640220832 is a wasteful number, since it uses less digits than its factorization.

13640220832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38213 (or 38205 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 13640220832 in words is "thirteen billion, six hundred forty million, two hundred twenty thousand, eight hundred thirty-two".