421445325505 has 16 divisors (see below), whose sum is σ = 512889781248. Its totient is φ = 332386600000.

The previous prime is 421445325463. The next prime is 421445325527. The reversal of 421445325505 is 505523544124.

It is not a de Polignac number, because 421445325505 - 2³⁷ = 284006372033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8050515 + ... + 8102695.

It is an arithmetic number, because the mean of its divisors is an integer number (32055611328).

Almost surely, 2^421445325505 is an apocalyptic number.

It is an amenable number.

421445325505 is a deficient number, since it is larger than the sum of its proper divisors (91444455743).

421445325505 is a wasteful number, since it uses less digits than its factorization.

421445325505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75008.

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

Adding to 421445325505 its reverse (505523544124), we get a palindrome (926968869629).

The spelling of 421445325505 in words is "four hundred twenty-one billion, four hundred forty-five million, three hundred twenty-five thousand, five hundred five".