1005550511011 has 8 divisors (see below), whose sum is σ = 1009711810800. Its totient is φ = 1001397783840.

The previous prime is 1005550510997. The next prime is 1005550511023. The reversal of 1005550511011 is 1101150555001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005550511011 is a prime.

It is a super-2 number, since 2×1005550511011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005550511081) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1908021 + ... + 2377318.

It is an arithmetic number, because the mean of its divisors is an integer number (126213976350).

Almost surely, 2^{1005550511011} is an apocalyptic number.

1005550511011 is a deficient number, since it is larger than the sum of its proper divisors (4161299789).

1005550511011 is an equidigital number, since it uses as much as digits as its factorization.

1005550511011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286309.

The product of its (nonzero) digits is 625, while the sum is 25.

The spelling of 1005550511011 in words is "one trillion, five billion, five hundred fifty million, five hundred eleven thousand, eleven".