84869555017 has 8 divisors (see below), whose sum is σ = 92206815624. Its totient is φ = 77647842048.

The previous prime is 84869554981. The next prime is 84869555063. The reversal of 84869555017 is 71055596848.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7374687376 + 77494867641 = 85876^2 + 278379^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 84869555017 - 2¹¹ = 84869552969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84869555077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28885378 + ... + 28888315.

It is an arithmetic number, because the mean of its divisors is an integer number (11525851953).

Almost surely, 2^84869555017 is an apocalyptic number.

It is an amenable number.

84869555017 is a deficient number, since it is larger than the sum of its proper divisors (7337260607).

84869555017 is a wasteful number, since it uses less digits than its factorization.

84869555017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57773819.

The product of its (nonzero) digits is 12096000, while the sum is 58.

The spelling of 84869555017 in words is "eighty-four billion, eight hundred sixty-nine million, five hundred fifty-five thousand, seventeen".