849825165564 has 24 divisors (see below), whose sum is σ = 2203250429520. Its totient is φ = 283275055152.

The previous prime is 849825165461. The next prime is 849825165587. The reversal of 849825165564 is 465561528948.

849825165564 is a `hidden beast` number, since 8 + 4 + 9 + 8 + 2 + 5 + 1 + 65 + 564 = 666.

It is a super-2 number, since 2×849825165564² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3934375659 + ... + 3934375874.

It is an arithmetic number, because the mean of its divisors is an integer number (91802101230).

Almost surely, 2^849825165564 is an apocalyptic number.

It is an amenable number.

849825165564 is an abundant number, since it is smaller than the sum of its proper divisors (1353425263956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

849825165564 is a wasteful number, since it uses less digits than its factorization.

849825165564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7868751546 (or 7868751538 counting only the distinct ones).

The product of its digits is 82944000, while the sum is 63.

The spelling of 849825165564 in words is "eight hundred forty-nine billion, eight hundred twenty-five million, one hundred sixty-five thousand, five hundred sixty-four".