421044055320505 has 8 divisors (see below), whose sum is σ = 510158234020032. Its totient is φ = 333564999166128.

The previous prime is 421044055320467. The next prime is 421044055320509. The reversal of 421044055320505 is 505023550440124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421044055320505 is a prime.

It is a super-3 number, since 3×421044055320505³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421044055320509) 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, 408780635719 + ... + 408780636748.

It is an arithmetic number, because the mean of its divisors is an integer number (63769779252504).

Almost surely, 2^{421044055320505} is an apocalyptic number.

It is an amenable number.

421044055320505 is a deficient number, since it is larger than the sum of its proper divisors (89114178699527).

421044055320505 is a wasteful number, since it uses less digits than its factorization.

421044055320505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817561272575.

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 421044055320505 in words is "four hundred twenty-one trillion, forty-four billion, fifty-five million, three hundred twenty thousand, five hundred five".