84179952005 has 4 divisors (see below), whose sum is σ = 101015942412. Its totient is φ = 67343961600.

The previous prime is 84179951957. The next prime is 84179952041. The reversal of 84179952005 is 50025997148.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17309612356 + 66870339649 = 131566^2 + 258593^2 .

It is not a de Polignac number, because 84179952005 - 2⁶ = 84179951941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8417995196 + ... + 8417995205.

It is an arithmetic number, because the mean of its divisors is an integer number (25253985603).

Almost surely, 2^84179952005 is an apocalyptic number.

It is an amenable number.

84179952005 is a deficient number, since it is larger than the sum of its proper divisors (16835990407).

84179952005 is a wasteful number, since it uses less digits than its factorization.

84179952005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16835990406.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 84179952005 in words is "eighty-four billion, one hundred seventy-nine million, nine hundred fifty-two thousand, five".