84129015834 has 48 divisors (see below), whose sum is σ = 191656338120. Its totient is φ = 26632126080.

The previous prime is 84129015833. The next prime is 84129015889. The reversal of 84129015834 is 43851092148.

84129015834 is a `hidden beast` number, since 8 + 41 + 29 + 0 + 1 + 583 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 54734942025 + 29394073809 = 233955^2 + 171447^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84129015834.

It is not an unprimeable number, because it can be changed into a prime (84129015833) 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 23 ways as a sum of consecutive naturals, for example, 1289197 + ... + 1352880.

Almost surely, 2^84129015834 is an apocalyptic number.

84129015834 is an abundant number, since it is smaller than the sum of its proper divisors (107527322286).

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

84129015834 is a wasteful number, since it uses less digits than its factorization.

84129015834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642175 (or 2642172 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 84129015834 in words is "eighty-four billion, one hundred twenty-nine million, fifteen thousand, eight hundred thirty-four".