511005340523 has 4 divisors (see below), whose sum is σ = 533222964048. Its totient is φ = 488787717000.

The previous prime is 511005340481. The next prime is 511005340529. The reversal of 511005340523 is 325043500115.

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

It is a cyclic number.

It is not a de Polignac number, because 511005340523 - 2⁶ = 511005340459 is a prime.

It is a super-2 number, since 2×511005340523² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511005340529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11108811728 + ... + 11108811773.

It is an arithmetic number, because the mean of its divisors is an integer number (133305741012).

Almost surely, 2^511005340523 is an apocalyptic number.

511005340523 is a deficient number, since it is larger than the sum of its proper divisors (22217623525).

511005340523 is a wasteful number, since it uses less digits than its factorization.

511005340523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22217623524.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 511005340523 its reverse (325043500115), we get a palindrome (836048840638).

The spelling of 511005340523 in words is "five hundred eleven billion, five million, three hundred forty thousand, five hundred twenty-three".