511116223443 has 16 divisors (see below), whose sum is σ = 796956416256. Its totient is φ = 285274170720.

The previous prime is 511116223439. The next prime is 511116223507. The reversal of 511116223443 is 344322611115.

It is not a de Polignac number, because 511116223443 - 2² = 511116223439 is a prime.

It is a super-2 number, since 2×511116223443² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511116223403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283009188 + ... + 283010993.

It is an arithmetic number, because the mean of its divisors is an integer number (49809776016).

Almost surely, 2^511116223443 is an apocalyptic number.

511116223443 is a deficient number, since it is larger than the sum of its proper divisors (285840192813).

511116223443 is a wasteful number, since it uses less digits than its factorization.

511116223443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566020234.

The product of its digits is 17280, while the sum is 33.

Adding to 511116223443 its reverse (344322611115), we get a palindrome (855438834558).

The spelling of 511116223443 in words is "five hundred eleven billion, one hundred sixteen million, two hundred twenty-three thousand, four hundred forty-three".