555055555550 has 24 divisors (see below), whose sum is σ = 1037296259832. Its totient is φ = 220969980000.

The previous prime is 555055555531. The next prime is 555055555577. The reversal of 555055555550 is 55555550555.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26295401 + ... + 26316500.

It is an arithmetic number, because the mean of its divisors is an integer number (43220677493).

Almost surely, 2^555055555550 is an apocalyptic number.

555055555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

555055555550 is a deficient number, since it is larger than the sum of its proper divisors (482240704282).

555055555550 is a wasteful number, since it uses less digits than its factorization.

555055555550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52612124 (or 52612119 counting only the distinct ones).

The product of its (nonzero) digits is 9765625, while the sum is 50.

The spelling of 555055555550 in words is "five hundred fifty-five billion, fifty-five million, five hundred fifty-five thousand, five hundred fifty".