384218421471 has 6 divisors (see below), whose sum is σ = 554982164360. Its totient is φ = 256145614308.

The previous prime is 384218421409. The next prime is 384218421479. The reversal of 384218421471 is 174124812483.

384218421471 is a `hidden beast` number, since 3 + 8 + 4 + 218 + 421 + 4 + 7 + 1 = 666.

It is not a de Polignac number, because 384218421471 - 2²² = 384214227167 is a prime.

It is a super-3 number, since 3×384218421471³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384218421479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21345467851 + ... + 21345467868.

Almost surely, 2^384218421471 is an apocalyptic number.

384218421471 is a deficient number, since it is larger than the sum of its proper divisors (170763742889).

384218421471 is a wasteful number, since it uses less digits than its factorization.

384218421471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42690935725 (or 42690935722 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The spelling of 384218421471 in words is "three hundred eighty-four billion, two hundred eighteen million, four hundred twenty-one thousand, four hundred seventy-one".