849825165565 has 16 divisors (see below), whose sum is σ = 1035411162048. Its totient is φ = 669454004736.

The previous prime is 849825165461. The next prime is 849825165587. The reversal of 849825165565 is 565561528948.

It is a cyclic number.

It is not a de Polignac number, because 849825165565 - 2⁹ = 849825165053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 849825165497 and 849825165506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379494 + ... + 1357816.

It is an arithmetic number, because the mean of its divisors is an integer number (64713197628).

Almost surely, 2^849825165565 is an apocalyptic number.

It is an amenable number.

849825165565 is a deficient number, since it is larger than the sum of its proper divisors (185585996483).

849825165565 is a wasteful number, since it uses less digits than its factorization.

849825165565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980988.

The product of its digits is 103680000, while the sum is 64.

The spelling of 849825165565 in words is "eight hundred forty-nine billion, eight hundred twenty-five million, one hundred sixty-five thousand, five hundred sixty-five".