421335280553 has 8 divisors (see below), whose sum is σ = 474465536256. Its totient is φ = 370676199600.

The previous prime is 421335280549. The next prime is 421335280673. The reversal of 421335280553 is 355082533124.

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 421335280553 - 2² = 421335280549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 421335280553.

It is not an unprimeable number, because it can be changed into a prime (421335280153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617793326 + ... + 617794007.

It is an arithmetic number, because the mean of its divisors is an integer number (59308192032).

Almost surely, 2^421335280553 is an apocalyptic number.

It is an amenable number.

421335280553 is a deficient number, since it is larger than the sum of its proper divisors (53130255703).

421335280553 is a wasteful number, since it uses less digits than its factorization.

421335280553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235587375.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 421335280553 in words is "four hundred twenty-one billion, three hundred thirty-five million, two hundred eighty thousand, five hundred fifty-three".