1005551056100 has 36 divisors (see below), whose sum is σ = 2182117043904. Its totient is φ = 402207288480.

The previous prime is 1005551056093. The next prime is 1005551056171. The reversal of 1005551056100 is 16501555001.

It is a happy number.

It is a super-2 number, since 2×1005551056100² (a number of 25 digits) contains 22 as substring.

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, 3271217 + ... + 3565383.

Almost surely, 2^{1005551056100} is an apocalyptic number.

1005551056100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005551056100 is an abundant number, since it is smaller than the sum of its proper divisors (1176565987804).

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

1005551056100 is a wasteful number, since it uses less digits than its factorization.

1005551056100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328364 (or 328357 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 1005551056100 in words is "one trillion, five billion, five hundred fifty-one million, fifty-six thousand, one hundred".