2105715560 has 64 divisors (see below), whose sum is σ = 5125075200. Its totient is φ = 774026496.

The previous prime is 2105715559. The next prime is 2105715571. The reversal of 2105715560 is 655175012.

It is a super-2 number, since 2×2105715560² = 8868076039252227200, which contains 22 as substring.

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, 109121 + ... + 126959.

It is an arithmetic number, because the mean of its divisors is an integer number (80079300).

Almost surely, 2^2105715560 is an apocalyptic number.

2105715560 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 2105715560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2562537600).

2105715560 is an abundant number, since it is smaller than the sum of its proper divisors (3019359640).

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

2105715560 is a wasteful number, since it uses less digits than its factorization.

2105715560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18090 (or 18086 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 2105715560 is about 45888.0764469377. The cubic root of 2105715560 is about 1281.7398946445.

The spelling of 2105715560 in words is "two billion, one hundred five million, seven hundred fifteen thousand, five hundred sixty".