511503630340 has 12 divisors (see below), whose sum is σ = 1074157623756. Its totient is φ = 204601452128.

The previous prime is 511503630301. The next prime is 511503630347. The reversal of 511503630340 is 43036305115.

It can be written as a sum of positive squares in 2 ways, for example, as 230705381124 + 280798249216 = 480318^2 + 529904^2 .

It is not an unprimeable number, because it can be changed into a prime (511503630347) 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, 12787590739 + ... + 12787590778.

It is an arithmetic number, because the mean of its divisors is an integer number (89513135313).

Almost surely, 2^511503630340 is an apocalyptic number.

It is an amenable number.

511503630340 is an abundant number, since it is smaller than the sum of its proper divisors (562653993416).

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

511503630340 is a wasteful number, since it uses less digits than its factorization.

511503630340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25575181526 (or 25575181524 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 511503630340 its reverse (43036305115), we get a palindrome (554539935455).

The spelling of 511503630340 in words is "five hundred eleven billion, five hundred three million, six hundred thirty thousand, three hundred forty".