550555555500 has 96 divisors (see below), whose sum is σ = 1781353129920. Its totient is φ = 146814811200.

The previous prime is 550555555481. The next prime is 550555555549. The reversal of 550555555500 is 5555555055.

It is a super-2 number, since 2×550555555500² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20377447 + ... + 20404446.

It is an arithmetic number, because the mean of its divisors is an integer number (18555761770).

Almost surely, 2^550555555500 is an apocalyptic number.

550555555500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550555555500 is an abundant number, since it is smaller than the sum of its proper divisors (1230797574420).

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

550555555500 is a wasteful number, since it uses less digits than its factorization.

550555555500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40781921 (or 40781903 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

It can be divided in two parts, 5 and 50555555500, that added together give a palindrome (50555555505).

The spelling of 550555555500 in words is "five hundred fifty billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred".