6555616105 has 4 divisors (see below), whose sum is σ = 7866739332. Its totient is φ = 5244492880.

The previous prime is 6555616063. The next prime is 6555616117. The reversal of 6555616105 is 5016165556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1292258704 + 5263357401 = 35948^2 + 72549^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6555616105 is a prime.

It is a super-2 number, since 2×6555616105² = 85952205032270742050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655561606 + ... + 655561615.

It is an arithmetic number, because the mean of its divisors is an integer number (1966684833).

Almost surely, 2^6555616105 is an apocalyptic number.

It is an amenable number.

6555616105 is a deficient number, since it is larger than the sum of its proper divisors (1311123227).

6555616105 is a wasteful number, since it uses less digits than its factorization.

6555616105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311123226.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 6555616105 is about 80966.7592595875. The cubic root of 6555616105 is about 1871.5632314397.

The spelling of 6555616105 in words is "six billion, five hundred fifty-five million, six hundred sixteen thousand, one hundred five".