84006415852129 has 4 divisors (see below), whose sum is σ = 84076362910660. Its totient is φ = 83936468793600.

The previous prime is 84006415852111. The next prime is 84006415852141. The reversal of 84006415852129 is 92125851460048.

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 20769758038225 + 63236657813904 = 4557385^2 + 7952148^2 .

It is a cyclic number.

It is not a de Polignac number, because 84006415852129 - 2⁵ = 84006415852097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84006415852129.

It is not an unprimeable number, because it can be changed into a prime (84006415852109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34973527464 + ... + 34973529865.

It is an arithmetic number, because the mean of its divisors is an integer number (21019090727665).

Almost surely, 2^{84006415852129} is an apocalyptic number.

It is an amenable number.

84006415852129 is a deficient number, since it is larger than the sum of its proper divisors (69947058531).

84006415852129 is a wasteful number, since it uses less digits than its factorization.

84006415852129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69947058530.

The product of its (nonzero) digits is 5529600, while the sum is 55.

The spelling of 84006415852129 in words is "eighty-four trillion, six billion, four hundred fifteen million, eight hundred fifty-two thousand, one hundred twenty-nine".