84436771068 has 144 divisors (see below), whose sum is σ = 235281586176. Its totient is φ = 25369787520.

The previous prime is 84436771061. The next prime is 84436771093. The reversal of 84436771068 is 86017763448.

84436771068 is a `hidden beast` number, since 84 + 436 + 7 + 71 + 0 + 68 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84436771061) 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 47 ways as a sum of consecutive naturals, for example, 10180003 + ... + 10188293.

It is an arithmetic number, because the mean of its divisors is an integer number (1633899904).

Almost surely, 2^84436771068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84436771068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117640793088).

84436771068 is an abundant number, since it is smaller than the sum of its proper divisors (150844815108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84436771068 is a wasteful number, since it uses less digits than its factorization.

84436771068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8824 (or 8819 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 84436771068 in words is "eighty-four billion, four hundred thirty-six million, seven hundred seventy-one thousand, sixty-eight".