1005555500550 has 36 divisors (see below), whose sum is σ = 2701592446020. Its totient is φ = 268148133360.

The previous prime is 1005555500519. The next prime is 1005555500617. The reversal of 1005555500550 is 550055555001.

It is a happy number.

1005555500550 is a `hidden beast` number, since 1 + 0 + 0 + 5 + 5 + 55 + 50 + 0 + 550 = 666.

1005555500550 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1005555500550² (a number of 25 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 17 ways as a sum of consecutive naturals, for example, 1117283440 + ... + 1117284339.

Almost surely, 2^{1005555500550} is an apocalyptic number.

1005555500550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1005555500550 is an abundant number, since it is smaller than the sum of its proper divisors (1696036945470).

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

1005555500550 is a wasteful number, since it uses less digits than its factorization.

1005555500550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234567797 (or 2234567789 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 1005555500550 in words is "one trillion, five billion, five hundred fifty-five million, five hundred thousand, five hundred fifty".