6561106116 has 12 divisors (see below), whose sum is σ = 15309247632. Its totient is φ = 2187035368.

The previous prime is 6561106103. The next prime is 6561106117. The reversal of 6561106116 is 6116011656.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×6561106116² = 86096226930825210912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6561106117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273379410 + ... + 273379433.

It is an arithmetic number, because the mean of its divisors is an integer number (1275770636).

Almost surely, 2^6561106116 is an apocalyptic number.

It is an amenable number.

6561106116 is an abundant number, since it is smaller than the sum of its proper divisors (8748141516).

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

6561106116 is a wasteful number, since it uses less digits than its factorization.

6561106116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546758850 (or 546758848 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 6561106116 is about 81000.6550343885. The cubic root of 6561106116 is about 1872.0855335215.

The spelling of 6561106116 in words is "six billion, five hundred sixty-one million, one hundred six thousand, one hundred sixteen".