2616421205 has 16 divisors (see below), whose sum is σ = 3169782720. Its totient is φ = 2073155712.

The previous prime is 2616421187. The next prime is 2616421217. The reversal of 2616421205 is 5021246162.

It is a cyclic number.

It is not a de Polignac number, because 2616421205 - 2¹² = 2616417109 is a prime.

It is a super-3 number, since 3×2616421205³ (a number of 29 digits) contains 333 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, 315806 + ... + 323984.

It is an arithmetic number, because the mean of its divisors is an integer number (198111420).

Almost surely, 2^2616421205 is an apocalyptic number.

It is an amenable number.

2616421205 is a deficient number, since it is larger than the sum of its proper divisors (553361515).

2616421205 is a wasteful number, since it uses less digits than its factorization.

2616421205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8788.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2616421205 is about 51150.9648491600. The cubic root of 2616421205 is about 1377.9577024547.

Adding to 2616421205 its reverse (5021246162), we get a palindrome (7637667367).

The spelling of 2616421205 in words is "two billion, six hundred sixteen million, four hundred twenty-one thousand, two hundred five".