10511111011 has 6 divisors (see below), whose sum is σ = 11093444412. Its totient is φ = 9957894300.

The previous prime is 10511111003. The next prime is 10511111063. The reversal of 10511111011 is 11011111501.

It is not a de Polignac number, because 10511111011 - 2³ = 10511111003 is a prime.

It is a super-2 number, since 2×10511111011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10511110982 and 10511111000.

It is not an unprimeable number, because it can be changed into a prime (10511111111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14557965 + ... + 14558686.

It is an arithmetic number, because the mean of its divisors is an integer number (1848907402).

Almost surely, 2^10511111011 is an apocalyptic number.

10511111011 is a deficient number, since it is larger than the sum of its proper divisors (582333401).

10511111011 is an equidigital number, since it uses as much as digits as its factorization.

10511111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29116689 (or 29116670 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 13.

Adding to 10511111011 its reverse (11011111501), we get a palindrome (21522222512).

The spelling of 10511111011 in words is "ten billion, five hundred eleven million, one hundred eleven thousand, eleven".