421563448505 has 16 divisors (see below), whose sum is σ = 522883944000. Its totient is φ = 326099636160.

The previous prime is 421563448477. The next prime is 421563448513. The reversal of 421563448505 is 505844365124.

It is not a de Polignac number, because 421563448505 - 2⁶ = 421563448441 is a prime.

It is a super-2 number, since 2×421563448505² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421563448505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11695355 + ... + 11731344.

It is an arithmetic number, because the mean of its divisors is an integer number (32680246500).

Almost surely, 2^421563448505 is an apocalyptic number.

It is an amenable number.

421563448505 is a deficient number, since it is larger than the sum of its proper divisors (101320495495).

421563448505 is a wasteful number, since it uses less digits than its factorization.

421563448505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23426824.

The product of its (nonzero) digits is 2304000, while the sum is 47.

The spelling of 421563448505 in words is "four hundred twenty-one billion, five hundred sixty-three million, four hundred forty-eight thousand, five hundred five".