421805467284163 has 8 divisors (see below), whose sum is σ = 446993178115680. Its totient is φ = 397327269433920.

The previous prime is 421805467284133. The next prime is 421805467284167. The reversal of 421805467284163 is 361482764508124.

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 421805467284163 - 2²¹ = 421805465187011 is a prime.

It is a super-2 number, since 2×421805467284163² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421805467284167) 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, 177378244095 + ... + 177378246472.

It is an arithmetic number, because the mean of its divisors is an integer number (55874147264460).

Almost surely, 2^{421805467284163} is an apocalyptic number.

421805467284163 is a deficient number, since it is larger than the sum of its proper divisors (25187710831517).

421805467284163 is a wasteful number, since it uses less digits than its factorization.

421805467284163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354756490637.

The product of its (nonzero) digits is 61931520, while the sum is 61.

The spelling of 421805467284163 in words is "four hundred twenty-one trillion, eight hundred five billion, four hundred sixty-seven million, two hundred eighty-four thousand, one hundred sixty-three".