609721200000 has 1152 divisors, whose sum is σ = 2433261448800. Its totient is φ = 145305600000.

The previous prime is 609721199953. The next prime is 609721200007. The reversal of 609721200000 is 2127906.

609721200000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609721200007) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3524399914 + ... + 3524400086.

Almost surely, 2^609721200000 is an apocalyptic number.

609721200000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609721200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216630724400).

609721200000 is an abundant number, since it is smaller than the sum of its proper divisors (1823540248800).

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

609721200000 is a wasteful number, since it uses less digits than its factorization.

609721200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

Adding to 609721200000 its reverse (2127906), we get a palindrome (609723327906).

The spelling of 609721200000 in words is "six hundred nine billion, seven hundred twenty-one million, two hundred thousand".