1005005506111 has 4 divisors (see below), whose sum is σ = 1022039497800. Its totient is φ = 987971514424.

The previous prime is 1005005506081. The next prime is 1005005506121. The reversal of 1005005506111 is 1116055005001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1005005506111 - 2⁵ = 1005005506079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005005506121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8516995756 + ... + 8516995873.

It is an arithmetic number, because the mean of its divisors is an integer number (255509874450).

Almost surely, 2^{1005005506111} is an apocalyptic number.

1005005506111 is a deficient number, since it is larger than the sum of its proper divisors (17033991689).

1005005506111 is an equidigital number, since it uses as much as digits as its factorization.

1005005506111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17033991688.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 1005005506111 in words is "one trillion, five billion, five million, five hundred six thousand, one hundred eleven".