84386511271 has 4 divisors (see below), whose sum is σ = 87296391000. Its totient is φ = 81476631544.

The previous prime is 84386511269. The next prime is 84386511283. The reversal of 84386511271 is 17211568348.

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

It is a cyclic number.

It is not a de Polignac number, because 84386511271 - 2¹ = 84386511269 is a prime.

It is a super-2 number, since 2×84386511271² (a number of 23 digits) contains 22 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 (84386511971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454939821 + ... + 1454939878.

It is an arithmetic number, because the mean of its divisors is an integer number (21824097750).

Almost surely, 2^84386511271 is an apocalyptic number.

84386511271 is a deficient number, since it is larger than the sum of its proper divisors (2909879729).

84386511271 is a wasteful number, since it uses less digits than its factorization.

84386511271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909879728.

The product of its digits is 322560, while the sum is 46.

The spelling of 84386511271 in words is "eighty-four billion, three hundred eighty-six million, five hundred eleven thousand, two hundred seventy-one".