5603621636809 has 9 divisors (see below), whose sum is σ = 6518517914541. Its totient is φ = 4803090056940.

The previous prime is 5603621636689. The next prime is 5603621636813. The reversal of 5603621636809 is 9086361263065.

The square root of 5603621636809 is 2367197.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 5603621636809 - 2¹¹ = 5603621634761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5603621636809.

It is not an unprimeable number, because it can be changed into a prime (5603621636869) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16401294 + ... + 16739464.

Almost surely, 2^{5603621636809} is an apocalyptic number.

5603621636809 is the 2367197-th square number.

5603621636809 is the 1183599-th centered octagonal number.

It is an amenable number.

5603621636809 is a deficient number, since it is larger than the sum of its proper divisors (914896277732).

5603621636809 is an frugal number, since it uses more digits than its factorization.

5603621636809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676356 (or 338178 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 5603621636809 in words is "five trillion, six hundred three billion, six hundred twenty-one million, six hundred thirty-six thousand, eight hundred nine".