511243240452 has 24 divisors (see below), whose sum is σ = 1363315308096. Its totient is φ = 146069497248.

The previous prime is 511243240441. The next prime is 511243240463. The reversal of 511243240452 is 254042342115.

It is an interprime number because it is at equal distance from previous prime (511243240441) and next prime (511243240463).

It is a super-2 number, since 2×511243240452² (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, 3043114443 + ... + 3043114610.

It is an arithmetic number, because the mean of its divisors is an integer number (56804804504).

Almost surely, 2^511243240452 is an apocalyptic number.

It is an amenable number.

511243240452 is an abundant number, since it is smaller than the sum of its proper divisors (852072067644).

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

511243240452 is a wasteful number, since it uses less digits than its factorization.

511243240452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6086229067 (or 6086229065 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 511243240452 its reverse (254042342115), we get a palindrome (765285582567).

The spelling of 511243240452 in words is "five hundred eleven billion, two hundred forty-three million, two hundred forty thousand, four hundred fifty-two".