555505555500 has 288 divisors, whose sum is σ = 2108194583040. Its totient is φ = 120289795200.

The previous prime is 555505555499. The next prime is 555505555559. The reversal of 555505555500 is 5555505555.

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 95 ways as a sum of consecutive naturals, for example, 134419 + ... + 1062581.

It is an arithmetic number, because the mean of its divisors is an integer number (7320120080).

Almost surely, 2^555505555500 is an apocalyptic number.

555505555500 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 555505555500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054097291520).

555505555500 is an abundant number, since it is smaller than the sum of its proper divisors (1552689027540).

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

555505555500 is a wasteful number, since it uses less digits than its factorization.

555505555500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928214 (or 928199 counting only the distinct ones).

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

The spelling of 555505555500 in words is "five hundred fifty-five billion, five hundred five million, five hundred fifty-five thousand, five hundred".