2185553215185 has 16 divisors (see below), whose sum is σ = 3500072850816. Its totient is φ = 1164565812608.

The previous prime is 2185553215177. The next prime is 2185553215193. The reversal of 2185553215185 is 5815123555812.

It is an interprime number because it is at equal distance from previous prime (2185553215177) and next prime (2185553215193).

It is a cyclic number.

It is not a de Polignac number, because 2185553215185 - 2³ = 2185553215177 is a prime.

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, 66393549 + ... + 66426458.

It is an arithmetic number, because the mean of its divisors is an integer number (218754553176).

Almost surely, 2^{2185553215185} is an apocalyptic number.

It is an amenable number.

2185553215185 is a deficient number, since it is larger than the sum of its proper divisors (1314519635631).

2185553215185 is a wasteful number, since it uses less digits than its factorization.

2185553215185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132821112.

The product of its digits is 2400000, while the sum is 51.

The spelling of 2185553215185 in words is "two trillion, one hundred eighty-five billion, five hundred fifty-three million, two hundred fifteen thousand, one hundred eighty-five".