55069728768 has 224 divisors, whose sum is σ = 163892910720. Its totient is φ = 18274222080.

The previous prime is 55069728757. The next prime is 55069728773. The reversal of 55069728768 is 86782796055.

55069728768 is a `hidden beast` number, since 550 + 6 + 9 + 7 + 2 + 8 + 76 + 8 = 666.

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, 67903083 + ... + 67903893.

It is an arithmetic number, because the mean of its divisors is an integer number (731664780).

Almost surely, 2^55069728768 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 55069728768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81946455360).

55069728768 is an abundant number, since it is smaller than the sum of its proper divisors (108823181952).

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

55069728768 is an equidigital number, since it uses as much as digits as its factorization.

55069728768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 63.

The spelling of 55069728768 in words is "fifty-five billion, sixty-nine million, seven hundred twenty-eight thousand, seven hundred sixty-eight".