2185553101281 has 16 divisors (see below), whose sum is σ = 3188147689728. Its totient is φ = 1320760403600.

The previous prime is 2185553101253. The next prime is 2185553101307. The reversal of 2185553101281 is 1821013555812.

It is not a de Polignac number, because 2185553101281 - 2¹⁸ = 2185552839137 is a prime.

It is a super-2 number, since 2×2185553101281² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2185553100281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95419215 + ... + 95442116.

It is an arithmetic number, because the mean of its divisors is an integer number (199259230608).

Almost surely, 2^{2185553101281} is an apocalyptic number.

It is an amenable number.

2185553101281 is a deficient number, since it is larger than the sum of its proper divisors (1002594588447).

2185553101281 is a wasteful number, since it uses less digits than its factorization.

2185553101281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190861692.

The product of its (nonzero) digits is 96000, while the sum is 42.

The spelling of 2185553101281 in words is "two trillion, one hundred eighty-five billion, five hundred fifty-three million, one hundred one thousand, two hundred eighty-one".