55605051648 has 216 divisors, whose sum is σ = 166519921568. Its totient is φ = 17831632896.

The previous prime is 55605051641. The next prime is 55605051661. The reversal of 55605051648 is 84615050655.

55605051648 is a `hidden beast` number, since 556 + 0 + 5 + 0 + 51 + 6 + 48 = 666.

It is not an unprimeable number, because it can be changed into a prime (55605051641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6633636 + ... + 6642012.

Almost surely, 2^55605051648 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 55605051648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83259960784).

55605051648 is an abundant number, since it is smaller than the sum of its proper divisors (110914869920).

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

55605051648 is a wasteful number, since it uses less digits than its factorization.

55605051648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8509 (or 8492 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 55605051648 in words is "fifty-five billion, six hundred five million, fifty-one thousand, six hundred forty-eight".