84876735034921 has 2 divisors, whose sum is σ = 84876735034922. Its totient is φ = 84876735034920.

The previous prime is 84876735034879. The next prime is 84876735035077. The reversal of 84876735034921 is 12943053767848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74054372085225 + 10822362949696 = 8605485^2 + 3289736^2 .

It is a cyclic number.

It is not a de Polignac number, because 84876735034921 - 2³³ = 84868145100329 is a prime.

It is not a weakly prime, because it can be changed into another prime (84876735014921) 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 as a sum of consecutive naturals, namely, 42438367517460 + 42438367517461.

It is an arithmetic number, because the mean of its divisors is an integer number (42438367517461).

It is a 2-persistent number, because it is pandigital, and so is 2⋅84876735034921 = 169753470069842, but 3⋅84876735034921 = 254630205104763 is not.

Almost surely, 2^{84876735034921} is an apocalyptic number.

It is an amenable number.

84876735034921 is a deficient number, since it is larger than the sum of its proper divisors (1).

84876735034921 is an equidigital number, since it uses as much as digits as its factorization.

84876735034921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243855360, while the sum is 67.

The spelling of 84876735034921 in words is "eighty-four trillion, eight hundred seventy-six billion, seven hundred thirty-five million, thirty-four thousand, nine hundred twenty-one".