55066611616 has 96 divisors (see below), whose sum is σ = 118369677888. Its totient is φ = 25117347840.

The previous prime is 55066611571. The next prime is 55066611629. The reversal of 55066611616 is 61611666055.

55066611616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55066611616² (a number of 22 digits) contains 22 as substring.

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, 2381551 + ... + 2404561.

It is an arithmetic number, because the mean of its divisors is an integer number (1233017478).

Almost surely, 2^55066611616 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 55066611616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59184838944).

55066611616 is an abundant number, since it is smaller than the sum of its proper divisors (63303066272).

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

55066611616 is a wasteful number, since it uses less digits than its factorization.

55066611616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23174 (or 23166 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 55066611616 in words is "fifty-five billion, sixty-six million, six hundred eleven thousand, six hundred sixteen".