421811705163 has 8 divisors (see below), whose sum is σ = 565997872528. Its totient is φ = 279416670624.

The previous prime is 421811705141. The next prime is 421811705213. The reversal of 421811705163 is 361507118124.

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

It is a de Polignac number, because none of the positive numbers 2^k-421811705163 is a prime.

It is a super-2 number, since 2×421811705163² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421811705363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447782656 + ... + 447783597.

It is an arithmetic number, because the mean of its divisors is an integer number (70749734066).

Almost surely, 2^421811705163 is an apocalyptic number.

421811705163 is a deficient number, since it is larger than the sum of its proper divisors (144186167365).

421811705163 is a wasteful number, since it uses less digits than its factorization.

421811705163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895566413.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 421811705163 in words is "four hundred twenty-one billion, eight hundred eleven million, seven hundred five thousand, one hundred sixty-three".