511043203420 has 12 divisors (see below), whose sum is σ = 1073190727224. Its totient is φ = 204417281360.

The previous prime is 511043203417. The next prime is 511043203439. The reversal of 511043203420 is 24302340115.

It is a super-2 number, since 2×511043203420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12776080066 + ... + 12776080105.

It is an arithmetic number, because the mean of its divisors is an integer number (89432560602).

Almost surely, 2^511043203420 is an apocalyptic number.

It is an amenable number.

511043203420 is an abundant number, since it is smaller than the sum of its proper divisors (562147523804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511043203420 is a wasteful number, since it uses less digits than its factorization.

511043203420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25552160180 (or 25552160178 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 511043203420 its reverse (24302340115), we get a palindrome (535345543535).

The spelling of 511043203420 in words is "five hundred eleven billion, forty-three million, two hundred three thousand, four hundred twenty".