55065560016 has 80 divisors (see below), whose sum is σ = 143707329920. Its totient is φ = 18167846400.

The previous prime is 55065559993. The next prime is 55065560021. The reversal of 55065560016 is 61006556055.

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, 5556666 + ... + 5566566.

It is an arithmetic number, because the mean of its divisors is an integer number (1796341624).

Almost surely, 2^55065560016 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 55065560016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71853664960).

55065560016 is an abundant number, since it is smaller than the sum of its proper divisors (88641769904).

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

55065560016 is a wasteful number, since it uses less digits than its factorization.

55065560016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11084 (or 11078 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 55065560016 in words is "fifty-five billion, sixty-five million, five hundred sixty thousand, sixteen".