2130556226185 has 4 divisors (see below), whose sum is σ = 2556667471428. Its totient is φ = 1704444980944.

The previous prime is 2130556226173. The next prime is 2130556226207. The reversal of 2130556226185 is 5816226550312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 339506659584 + 1791049566601 = 582672^2 + 1338301^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130556226185 - 2³³ = 2121966291593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213055622614 + ... + 213055622623.

It is an arithmetic number, because the mean of its divisors is an integer number (639166867857).

Almost surely, 2^{2130556226185} is an apocalyptic number.

It is an amenable number.

2130556226185 is a deficient number, since it is larger than the sum of its proper divisors (426111245243).

2130556226185 is an equidigital number, since it uses as much as digits as its factorization.

2130556226185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426111245242.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 2130556226185 in words is "two trillion, one hundred thirty billion, five hundred fifty-six million, two hundred twenty-six thousand, one hundred eighty-five".