55611550120 has 128 divisors (see below), whose sum is σ = 144584352000. Its totient is φ = 18856857600.

The previous prime is 55611550117. The next prime is 55611550121. The reversal of 55611550120 is 2105511655.

It is not an unprimeable number, because it can be changed into a prime (55611550121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10051755 + ... + 10057285.

It is an arithmetic number, because the mean of its divisors is an integer number (1129565250).

Almost surely, 2^55611550120 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 55611550120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72292176000).

55611550120 is an abundant number, since it is smaller than the sum of its proper divisors (88972801880).

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

55611550120 is a wasteful number, since it uses less digits than its factorization.

55611550120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939 (or 5935 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 55611550120 in words is "fifty-five billion, six hundred eleven million, five hundred fifty thousand, one hundred twenty".