84391516911 has 16 divisors (see below), whose sum is σ = 121186622816. Its totient is φ = 51929358336.

The previous prime is 84391516897. The next prime is 84391516939. The reversal of 84391516911 is 11961519348.

It is not a de Polignac number, because 84391516911 - 2¹⁵ = 84391484143 is a prime.

It is a super-3 number, since 3×84391516911³ (a number of 34 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 (84391515911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500271 + ... + 647343.

It is an arithmetic number, because the mean of its divisors is an integer number (7574163926).

Almost surely, 2^84391516911 is an apocalyptic number.

84391516911 is a deficient number, since it is larger than the sum of its proper divisors (36795105905).

84391516911 is a wasteful number, since it uses less digits than its factorization.

84391516911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161802.

The product of its digits is 233280, while the sum is 48.

The spelling of 84391516911 in words is "eighty-four billion, three hundred ninety-one million, five hundred sixteen thousand, nine hundred eleven".