84054206871 has 48 divisors (see below), whose sum is σ = 127839287520. Its totient is φ = 54582232320.

The previous prime is 84054206869. The next prime is 84054206953. The reversal of 84054206871 is 17860245048.

84054206871 is a `hidden beast` number, since 8 + 40 + 542 + 0 + 68 + 7 + 1 = 666.

It is not a de Polignac number, because 84054206871 - 2¹ = 84054206869 is a prime.

It is a super-2 number, since 2×84054206871² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84054206801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19817311 + ... + 19821551.

It is an arithmetic number, because the mean of its divisors is an integer number (2663318490).

Almost surely, 2^84054206871 is an apocalyptic number.

84054206871 is a deficient number, since it is larger than the sum of its proper divisors (43785080649).

84054206871 is a wasteful number, since it uses less digits than its factorization.

84054206871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733 (or 4684 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 84054206871 in words is "eighty-four billion, fifty-four million, two hundred six thousand, eight hundred seventy-one".