1056105505550 has 12 divisors (see below), whose sum is σ = 1964356240416. Its totient is φ = 422442202200.

The previous prime is 1056105505541. The next prime is 1056105505597. The reversal of 1056105505550 is 555055016501.

It is a happy number.

It is a super-2 number, since 2×1056105505550² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10561055006 + ... + 10561055105.

It is an arithmetic number, because the mean of its divisors is an integer number (163696353368).

Almost surely, 2^{1056105505550} is an apocalyptic number.

1056105505550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1056105505550 is a deficient number, since it is larger than the sum of its proper divisors (908250734866).

1056105505550 is a wasteful number, since it uses less digits than its factorization.

1056105505550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21122110123 (or 21122110118 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 1056105505550 in words is "one trillion, fifty-six billion, one hundred five million, five hundred five thousand, five hundred fifty".