513105197412 has 24 divisors (see below), whose sum is σ = 1199285077536. Its totient is φ = 170743691968.

The previous prime is 513105197389. The next prime is 513105197417. The reversal of 513105197412 is 214791501315.

It is a super-2 number, since 2×513105197412² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513105197417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36414393 + ... + 36428480.

It is an arithmetic number, because the mean of its divisors is an integer number (49970211564).

Almost surely, 2^513105197412 is an apocalyptic number.

It is an amenable number.

513105197412 is an abundant number, since it is smaller than the sum of its proper divisors (686179880124).

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

513105197412 is a wasteful number, since it uses less digits than its factorization.

513105197412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72843467 (or 72843465 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 39.

Adding to 513105197412 its reverse (214791501315), we get a palindrome (727896698727).

The spelling of 513105197412 in words is "five hundred thirteen billion, one hundred five million, one hundred ninety-seven thousand, four hundred twelve".