1005550005550 has 96 divisors (see below), whose sum is σ = 1925184780288. Its totient is φ = 390538350720.

The previous prime is 1005550005461. The next prime is 1005550005563. The reversal of 1005550005550 is 555000555001.

It is a super-2 number, since 2×1005550005550² (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 47 ways as a sum of consecutive naturals, for example, 509654364 + ... + 509656336.

It is an arithmetic number, because the mean of its divisors is an integer number (20054008128).

Almost surely, 2^{1005550005550} is an apocalyptic number.

1005550005550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1005550005550 is a deficient number, since it is larger than the sum of its proper divisors (919634774738).

1005550005550 is a wasteful number, since it uses less digits than its factorization.

1005550005550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314 (or 3309 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 1005550005550 in words is "one trillion, five billion, five hundred fifty million, five thousand, five hundred fifty".