84279539121 has 8 divisors (see below), whose sum is σ = 112425459744. Its totient is φ = 56159988960.

The previous prime is 84279539059. The next prime is 84279539137. The reversal of 84279539121 is 12193597248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-84279539121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84279539321) 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 7 ways as a sum of consecutive naturals, for example, 6585156 + ... + 6597941.

It is an arithmetic number, because the mean of its divisors is an integer number (14053182468).

Almost surely, 2^84279539121 is an apocalyptic number.

It is an amenable number.

84279539121 is a deficient number, since it is larger than the sum of its proper divisors (28145920623).

84279539121 is a wasteful number, since it uses less digits than its factorization.

84279539121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13185231.

The product of its digits is 1088640, while the sum is 51.

The spelling of 84279539121 in words is "eighty-four billion, two hundred seventy-nine million, five hundred thirty-nine thousand, one hundred twenty-one".