86219543381 has 4 divisors (see below), whose sum is σ = 86459709600. Its totient is φ = 85979377164.

The previous prime is 86219543339. The next prime is 86219543393. The reversal of 86219543381 is 18334591268.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86219543381 - 2⁶ = 86219543317 is a prime.

It is a super-2 number, since 2×86219543381² (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 (86219543581) 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 3 ways as a sum of consecutive naturals, for example, 120082571 + ... + 120083288.

It is an arithmetic number, because the mean of its divisors is an integer number (21614927400).

Almost surely, 2^86219543381 is an apocalyptic number.

It is an amenable number.

86219543381 is a deficient number, since it is larger than the sum of its proper divisors (240166219).

86219543381 is a wasteful number, since it uses less digits than its factorization.

86219543381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240166218.

The product of its digits is 1244160, while the sum is 50.

The spelling of 86219543381 in words is "eighty-six billion, two hundred nineteen million, five hundred forty-three thousand, three hundred eighty-one".