84169147085 has 4 divisors (see below), whose sum is σ = 101002976508. Its totient is φ = 67335317664.

The previous prime is 84169147057. The next prime is 84169147103. The reversal of 84169147085 is 58074196148.

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 35915556196 + 48253590889 = 189514^2 + 219667^2 .

It is a cyclic number.

It is not a de Polignac number, because 84169147085 - 2¹⁴ = 84169130701 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, 8416914704 + ... + 8416914713.

It is an arithmetic number, because the mean of its divisors is an integer number (25250744127).

Almost surely, 2^84169147085 is an apocalyptic number.

It is an amenable number.

84169147085 is a deficient number, since it is larger than the sum of its proper divisors (16833829423).

84169147085 is a wasteful number, since it uses less digits than its factorization.

84169147085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16833829422.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 84169147085 in words is "eighty-four billion, one hundred sixty-nine million, one hundred forty-seven thousand, eighty-five".