2178885144160 has 96 divisors (see below), whose sum is σ = 5287908491712. Its totient is φ = 847811266560.

The previous prime is 2178885144133. The next prime is 2178885144187. The reversal of 2178885144160 is 614415888712.

It is an interprime number because it is at equal distance from previous prime (2178885144133) and next prime (2178885144187).

It is a super-2 number, since 2×2178885144160² (a number of 25 digits) contains 22 as substring.

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, 28454725 + ... + 28531195.

It is an arithmetic number, because the mean of its divisors is an integer number (55082380122).

Almost surely, 2^{2178885144160} is an apocalyptic number.

2178885144160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2178885144160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2643954245856).

2178885144160 is an abundant number, since it is smaller than the sum of its proper divisors (3109023347552).

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

2178885144160 is a wasteful number, since it uses less digits than its factorization.

2178885144160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81336 (or 81328 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 55.

The spelling of 2178885144160 in words is "two trillion, one hundred seventy-eight billion, eight hundred eighty-five million, one hundred forty-four thousand, one hundred sixty".