84117312854471 has 4 divisors (see below), whose sum is σ = 90587875381752. Its totient is φ = 77646750327192.

The previous prime is 84117312854381. The next prime is 84117312854527. The reversal of 84117312854471 is 17445821371148.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84117312854471 is a prime.

It is a super-3 number, since 3×84117312854471³ (a number of 43 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 (84117312854371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3235281263621 + ... + 3235281263646.

It is an arithmetic number, because the mean of its divisors is an integer number (22646968845438).

Almost surely, 2^{84117312854471} is an apocalyptic number.

84117312854471 is a deficient number, since it is larger than the sum of its proper divisors (6470562527281).

84117312854471 is a wasteful number, since it uses less digits than its factorization.

84117312854471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470562527280.

The product of its digits is 6021120, while the sum is 56.

The spelling of 84117312854471 in words is "eighty-four trillion, one hundred seventeen billion, three hundred twelve million, eight hundred fifty-four thousand, four hundred seventy-one".