609863632240 has 20 divisors (see below), whose sum is σ = 1417932945144. Its totient is φ = 243945452864.

The previous prime is 609863632229. The next prime is 609863632241. The reversal of 609863632240 is 42236368906.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609863632241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3811647622 + ... + 3811647781.

Almost surely, 2^609863632240 is an apocalyptic number.

It is an amenable number.

609863632240 is an abundant number, since it is smaller than the sum of its proper divisors (808069312904).

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

609863632240 is a wasteful number, since it uses less digits than its factorization.

609863632240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7623295416 (or 7623295410 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 609863632240 in words is "six hundred nine billion, eight hundred sixty-three million, six hundred thirty-two thousand, two hundred forty".