2128618560 has 224 divisors, whose sum is σ = 7050389760. Its totient is φ = 543449088.

The previous prime is 2128618549. The next prime is 2128618561. The reversal of 2128618560 is 658168212.

It is not an unprimeable number, because it can be changed into a prime (2128618561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4370637 + ... + 4371123.

Almost surely, 2^2128618560 is an apocalyptic number.

2128618560 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 2128618560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3525194880).

2128618560 is an abundant number, since it is smaller than the sum of its proper divisors (4921771200).

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

2128618560 is a wasteful number, since it uses less digits than its factorization.

2128618560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 2128618560 is about 46136.9543858283. The cubic root of 2128618560 is about 1286.3701333998.

The spelling of 2128618560 in words is "two billion, one hundred twenty-eight million, six hundred eighteen thousand, five hundred sixty".