1011116505 has 16 divisors (see below), whose sum is σ = 1848898944. Its totient is φ = 462224640.

The previous prime is 1011116479. The next prime is 1011116537. The reversal of 1011116505 is 5056111101.

It is a happy number.

1011116505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011116505 - 2¹² = 1011112409 is a prime.

It is a super-5 number, since 5×1011116505⁵ (a number of 46 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4814736 + ... + 4814945.

It is an arithmetic number, because the mean of its divisors is an integer number (115556184).

Almost surely, 2^1011116505 is an apocalyptic number.

1011116505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011116505 is a deficient number, since it is larger than the sum of its proper divisors (837782439).

1011116505 is an equidigital number, since it uses as much as digits as its factorization.

1011116505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9629696.

The product of its (nonzero) digits is 150, while the sum is 21.

The square root of 1011116505 is about 31798.0581954307. The cubic root of 1011116505 is about 1003.6918550995.

Adding to 1011116505 its reverse (5056111101), we get a palindrome (6067227606).

The spelling of 1011116505 in words is "one billion, eleven million, one hundred sixteen thousand, five hundred five".