609653329921 has 8 divisors (see below), whose sum is σ = 615651490304. Its totient is φ = 603680968800.

The previous prime is 609653329907. The next prime is 609653329991. The reversal of 609653329921 is 129923356906.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 609653329921 - 2⁷ = 609653329793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609653329991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6402321 + ... + 6496846.

It is an arithmetic number, because the mean of its divisors is an integer number (76956436288).

Almost surely, 2^609653329921 is an apocalyptic number.

It is an amenable number.

609653329921 is a deficient number, since it is larger than the sum of its proper divisors (5998160383).

609653329921 is a wasteful number, since it uses less digits than its factorization.

609653329921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12899631.

The product of its (nonzero) digits is 4723920, while the sum is 55.

The spelling of 609653329921 in words is "six hundred nine billion, six hundred fifty-three million, three hundred twenty-nine thousand, nine hundred twenty-one".