1061805882555 has 48 divisors (see below), whose sum is σ = 2025546453216. Its totient is φ = 510259061760.

The previous prime is 1061805882517. The next prime is 1061805882559. The reversal of 1061805882555 is 5552885081601.

1061805882555 is a `hidden beast` number, since 1 + 0 + 6 + 1 + 8 + 0 + 5 + 8 + 82 + 555 = 666.

It is not a de Polignac number, because 1061805882555 - 2⁹ = 1061805882043 is a prime.

It is a super-2 number, since 2×1061805882555² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061805882559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9435492 + ... + 9547361.

It is an arithmetic number, because the mean of its divisors is an integer number (42198884442).

Almost surely, 2^{1061805882555} is an apocalyptic number.

1061805882555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1061805882555 is a deficient number, since it is larger than the sum of its proper divisors (963740570661).

1061805882555 is a wasteful number, since it uses less digits than its factorization.

1061805882555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18982988 (or 18982985 counting only the distinct ones).

The product of its (nonzero) digits is 3840000, while the sum is 54.

The spelling of 1061805882555 in words is "one trillion, sixty-one billion, eight hundred five million, eight hundred eighty-two thousand, five hundred fifty-five".