13601643500 has 24 divisors (see below), whose sum is σ = 29705990496. Its totient is φ = 5440657200.

The previous prime is 13601643493. The next prime is 13601643511. The reversal of 13601643500 is 534610631.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 13601144 + ... + 13602143.

It is an arithmetic number, because the mean of its divisors is an integer number (1237749604).

Almost surely, 2^13601643500 is an apocalyptic number.

13601643500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13601643500 is an abundant number, since it is smaller than the sum of its proper divisors (16104346996).

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

13601643500 is a wasteful number, since it uses less digits than its factorization.

13601643500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27203306 (or 27203294 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 13601643500 in words is "thirteen billion, six hundred one million, six hundred forty-three thousand, five hundred".