511451342420 has 12 divisors (see below), whose sum is σ = 1074047819124. Its totient is φ = 204580536960.

The previous prime is 511451342407. The next prime is 511451342483. The reversal of 511451342420 is 24243154115.

It can be written as a sum of positive squares in 2 ways, for example, as 387785180176 + 123666162244 = 622724^2 + 351662^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12786283541 + ... + 12786283580.

It is an arithmetic number, because the mean of its divisors is an integer number (89503984927).

Almost surely, 2^511451342420 is an apocalyptic number.

It is an amenable number.

511451342420 is an abundant number, since it is smaller than the sum of its proper divisors (562596476704).

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

511451342420 is a wasteful number, since it uses less digits than its factorization.

511451342420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25572567130 (or 25572567128 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 511451342420 its reverse (24243154115), we get a palindrome (535694496535).

The spelling of 511451342420 in words is "five hundred eleven billion, four hundred fifty-one million, three hundred forty-two thousand, four hundred twenty".