210001616560 has 40 divisors (see below), whose sum is σ = 489312963216. Its totient is φ = 83818417920.

The previous prime is 210001616533. The next prime is 210001616567. The reversal of 210001616560 is 65616100012.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (210001616567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2810214 + ... + 2883973.

Almost surely, 2^210001616560 is an apocalyptic number.

210001616560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001616560 is an abundant number, since it is smaller than the sum of its proper divisors (279311346656).

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

210001616560 is a wasteful number, since it uses less digits than its factorization.

210001616560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694661 (or 5694655 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 210001616560 its reverse (65616100012), we get a palindrome (275617716572).

The spelling of 210001616560 in words is "two hundred ten billion, one million, six hundred sixteen thousand, five hundred sixty".