2163041280 has 176 divisors, whose sum is σ = 7687549440. Its totient is φ = 576774144.

The previous prime is 2163041269. The next prime is 2163041297. The reversal of 2163041280 is 821403612.

2163041280 is a `hidden beast` number, since 2 + 1 + 630 + 4 + 1 + 28 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 130417 + ... + 146063.

Almost surely, 2^2163041280 is an apocalyptic number.

2163041280 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 2163041280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3843774720).

2163041280 is an abundant number, since it is smaller than the sum of its proper divisors (5524508160).

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

2163041280 is a wasteful number, since it uses less digits than its factorization.

2163041280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15681 (or 15657 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2163041280 is about 46508.5076088236. The cubic root of 2163041280 is about 1293.2672183111.

Adding to 2163041280 its reverse (821403612), we get a palindrome (2984444892).

The spelling of 2163041280 in words is "two billion, one hundred sixty-three million, forty-one thousand, two hundred eighty".