550555505500 has 384 divisors, whose sum is σ = 1627950385152. Its totient is φ = 158384160000.

The previous prime is 550555505471. The next prime is 550555505537. The reversal of 550555505500 is 5505555055.

It is a super-2 number, since 2×550555505500² (a number of 24 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 127 ways as a sum of consecutive naturals, for example, 60555955 + ... + 60565045.

It is an arithmetic number, because the mean of its divisors is an integer number (4239454128).

Almost surely, 2^550555505500 is an apocalyptic number.

550555505500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550555505500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813975192576).

550555505500 is an abundant number, since it is smaller than the sum of its proper divisors (1077394879652).

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

550555505500 is a wasteful number, since it uses less digits than its factorization.

550555505500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9163 (or 9129 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 40.

550555505500 divided by its reverse (5505555055) gives a square (100 = 10²).

It can be divided in two parts, 55055 and 5505500, that multiplied together give a square (303105302500 = 550550²).

The spelling of 550555505500 in words is "five hundred fifty billion, five hundred fifty-five million, five hundred five thousand, five hundred".