55516516616 has 128 divisors (see below), whose sum is σ = 125680066560. Its totient is φ = 22678656000.

The previous prime is 55516516507. The next prime is 55516516619. The reversal of 55516516616 is 61661561555.

It is not an unprimeable number, because it can be changed into a prime (55516516619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28454441 + ... + 28456391.

It is an arithmetic number, because the mean of its divisors is an integer number (981875520).

Almost surely, 2^55516516616 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 55516516616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62840033280).

55516516616 is an abundant number, since it is smaller than the sum of its proper divisors (70163549944).

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

55516516616 is a wasteful number, since it uses less digits than its factorization.

55516516616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835 (or 2831 counting only the distinct ones).

The product of its digits is 810000, while the sum is 47.

The spelling of 55516516616 in words is "fifty-five billion, five hundred sixteen million, five hundred sixteen thousand, six hundred sixteen".