6516616104 has 64 divisors (see below), whose sum is σ = 18170697600. Its totient is φ = 2163927168.

The previous prime is 6516616079. The next prime is 6516616133. The reversal of 6516616104 is 4016166156.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 549 + ... + 114164.

It is an arithmetic number, because the mean of its divisors is an integer number (283917150).

Almost surely, 2^6516616104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6516616104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9085348800).

6516616104 is an abundant number, since it is smaller than the sum of its proper divisors (11654081496).

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

6516616104 is a wasteful number, since it uses less digits than its factorization.

6516616104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114991 (or 114981 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 6516616104 is about 80725.5604130439. The cubic root of 6516616104 is about 1867.8444763812.

The spelling of 6516616104 in words is "six billion, five hundred sixteen million, six hundred sixteen thousand, one hundred four".