849401841865 has 16 divisors (see below), whose sum is σ = 1088443745280. Its totient is φ = 634925511360.

The previous prime is 849401841829. The next prime is 849401841887. The reversal of 849401841865 is 568148104948.

It is not a de Polignac number, because 849401841865 - 2¹⁷ = 849401710793 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94478469 + ... + 94487458.

It is an arithmetic number, because the mean of its divisors is an integer number (68027734080).

Almost surely, 2^849401841865 is an apocalyptic number.

It is an amenable number.

849401841865 is a deficient number, since it is larger than the sum of its proper divisors (239041903415).

849401841865 is a wasteful number, since it uses less digits than its factorization.

849401841865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188965992.

The product of its (nonzero) digits is 8847360, while the sum is 58.

The spelling of 849401841865 in words is "eight hundred forty-nine billion, four hundred one million, eight hundred forty-one thousand, eight hundred sixty-five".