511023326223 has 4 divisors (see below), whose sum is σ = 681364434968. Its totient is φ = 340682217480.

The previous prime is 511023326183. The next prime is 511023326291. The reversal of 511023326223 is 322623320115.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 511023326223 - 2²² = 511019131919 is a prime.

It is a super-2 number, since 2×511023326223² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511023322223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85170554368 + ... + 85170554373.

It is an arithmetic number, because the mean of its divisors is an integer number (170341108742).

Almost surely, 2^511023326223 is an apocalyptic number.

511023326223 is a deficient number, since it is larger than the sum of its proper divisors (170341108745).

511023326223 is a wasteful number, since it uses less digits than its factorization.

511023326223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170341108744.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 511023326223 its reverse (322623320115), we get a palindrome (833646646338).

The spelling of 511023326223 in words is "five hundred eleven billion, twenty-three million, three hundred twenty-six thousand, two hundred twenty-three".