2185565655822 has 32 divisors (see below), whose sum is σ = 4402314036000. Its totient is φ = 723328867968.

The previous prime is 2185565655751. The next prime is 2185565655839. The reversal of 2185565655822 is 2285565655812.

It is a happy number.

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, 1624108 + ... + 2647424.

It is an arithmetic number, because the mean of its divisors is an integer number (137572313625).

Almost surely, 2^{2185565655822} is an apocalyptic number.

2185565655822 is an abundant number, since it is smaller than the sum of its proper divisors (2216748380178).

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

2185565655822 is a wasteful number, since it uses less digits than its factorization.

2185565655822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025860.

The product of its digits is 57600000, while the sum is 60.

The spelling of 2185565655822 in words is "two trillion, one hundred eighty-five billion, five hundred sixty-five million, six hundred fifty-five thousand, eight hundred twenty-two".