464420017640221 has 4 divisors (see below), whose sum is σ = 464438888089344. Its totient is φ = 464401147191100.

The previous prime is 464420017640213. The next prime is 464420017640351. The reversal of 464420017640221 is 122046710024464.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 464420017640221 - 2³ = 464420017640213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464420027640221) 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, 9435187645 + ... + 9435236866.

It is an arithmetic number, because the mean of its divisors is an integer number (116109722022336).

Almost surely, 2^{464420017640221} is an apocalyptic number.

It is an amenable number.

464420017640221 is a deficient number, since it is larger than the sum of its proper divisors (18870449123).

464420017640221 is a wasteful number, since it uses less digits than its factorization.

464420017640221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18870449122.

The product of its (nonzero) digits is 516096, while the sum is 43.

Adding to 464420017640221 its reverse (122046710024464), we get a palindrome (586466727664685).

The spelling of 464420017640221 in words is "four hundred sixty-four trillion, four hundred twenty billion, seventeen million, six hundred forty thousand, two hundred twenty-one".