511111111106 has 16 divisors (see below), whose sum is σ = 800038512000. Its totient is φ = 244432676928.

The previous prime is 511111111079. The next prime is 511111111153. The reversal of 511111111106 is 601111111115.

It is a happy number.

It is a super-2 number, since 2×511111111106² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739235 + ... + 1252473.

It is an arithmetic number, because the mean of its divisors is an integer number (50002407000).

Almost surely, 2^511111111106 is an apocalyptic number.

511111111106 is a deficient number, since it is larger than the sum of its proper divisors (288927400894).

511111111106 is a wasteful number, since it uses less digits than its factorization.

511111111106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534913.

The product of its (nonzero) digits is 30, while the sum is 20.

Subtracting 511111111106 from its reverse (601111111115), we obtain a palindrome (90000000009).

It can be divided in two parts, 5 and 11111111106, that added together give a palindrome (11111111111).

The spelling of 511111111106 in words is "five hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred six".