64243021601 has 8 divisors (see below), whose sum is σ = 70470499008. Its totient is φ = 58080078000.

The previous prime is 64243021589. The next prime is 64243021643. The reversal of 64243021601 is 10612034246.

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 64243021601 - 2³⁰ = 63169279777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64243021651) 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, 16131365 + ... + 16135346.

It is an arithmetic number, because the mean of its divisors is an integer number (8808812376).

Almost surely, 2^64243021601 is an apocalyptic number.

It is an amenable number.

64243021601 is a deficient number, since it is larger than the sum of its proper divisors (6227477407).

64243021601 is a wasteful number, since it uses less digits than its factorization.

64243021601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32266903.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 64243021601 its reverse (10612034246), we get a palindrome (74855055847).

The spelling of 64243021601 in words is "sixty-four billion, two hundred forty-three million, twenty-one thousand, six hundred one".