1005500111111 has 8 divisors (see below), whose sum is σ = 1014813528960. Its totient is φ = 996216402168.

The previous prime is 1005500111107. The next prime is 1005500111113. The reversal of 1005500111111 is 1111110055001.

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

It is a cyclic number.

It is not a de Polignac number, because 1005500111111 - 2² = 1005500111107 is a prime.

It is a super-2 number, since 2×1005500111111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1005500111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005500111113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7359221 + ... + 7494606.

It is an arithmetic number, because the mean of its divisors is an integer number (126851691120).

Almost surely, 2^{1005500111111} is an apocalyptic number.

1005500111111 is a deficient number, since it is larger than the sum of its proper divisors (9313417849).

1005500111111 is a wasteful number, since it uses less digits than its factorization.

1005500111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14854453.

The product of its (nonzero) digits is 25, while the sum is 17.

Adding to 1005500111111 its reverse (1111110055001), we get a palindrome (2116610166112).

The spelling of 1005500111111 in words is "one trillion, five billion, five hundred million, one hundred eleven thousand, one hundred eleven".