1005556010556 has 12 divisors (see below), whose sum is σ = 2346297357992. Its totient is φ = 335185336848.

The previous prime is 1005556010509. The next prime is 1005556010587. The reversal of 1005556010556 is 6550106555001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1005556010556² (a number of 25 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 41898167095 + ... + 41898167118.

Almost surely, 2^{1005556010556} is an apocalyptic number.

It is an amenable number.

1005556010556 is an abundant number, since it is smaller than the sum of its proper divisors (1340741347436).

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

1005556010556 is a wasteful number, since it uses less digits than its factorization.

1005556010556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83796334220 (or 83796334218 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 1005556010556 in words is "one trillion, five billion, five hundred fifty-six million, ten thousand, five hundred fifty-six".