55500550555548 has 288 divisors, whose sum is σ = 157193088079104. Its totient is φ = 15185518129152.

The previous prime is 55500550555537. The next prime is 55500550555577. The reversal of 55500550555548 is 84555505500555.

It is a super-2 number, since 2×55500550555548² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 262316890 + ... + 262528382.

It is an arithmetic number, because the mean of its divisors is an integer number (545809333608).

Almost surely, 2^{55500550555548} 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 55500550555548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78596544039552).

55500550555548 is an abundant number, since it is smaller than the sum of its proper divisors (101692537523556).

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

55500550555548 is a wasteful number, since it uses less digits than its factorization.

55500550555548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211761 (or 211752 counting only the distinct ones).

The product of its (nonzero) digits is 62500000, while the sum is 57.

The spelling of 55500550555548 in words is "fifty-five trillion, five hundred billion, five hundred fifty million, five hundred fifty-five thousand, five hundred forty-eight".