1005055556055 has 32 divisors (see below), whose sum is σ = 1713119466240. Its totient is φ = 501699248640.

The previous prime is 1005055556023. The next prime is 1005055556069. The reversal of 1005055556055 is 5506555505001.

It is not a de Polignac number, because 1005055556055 - 2⁵ = 1005055556023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1005055555998 and 1005055556016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21220386 + ... + 21267695.

It is an arithmetic number, because the mean of its divisors is an integer number (53534983320).

Almost surely, 2^{1005055556055} is an apocalyptic number.

1005055556055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1005055556055 is a deficient number, since it is larger than the sum of its proper divisors (708063910185).

1005055556055 is a wasteful number, since it uses less digits than its factorization.

1005055556055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42488191.

The product of its (nonzero) digits is 468750, while the sum is 42.

The spelling of 1005055556055 in words is "one trillion, five billion, fifty-five million, five hundred fifty-six thousand, fifty-five".