513151340252 has 24 divisors (see below), whose sum is σ = 951086512656. Its totient is φ = 241420186368.

The previous prime is 513151340179. The next prime is 513151340267. The reversal of 513151340252 is 252043151315.

It is a congruent number.

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, 717278 + ... + 1241285.

It is an arithmetic number, because the mean of its divisors is an integer number (39628604694).

Almost surely, 2^513151340252 is an apocalyptic number.

It is an amenable number.

513151340252 is a deficient number, since it is larger than the sum of its proper divisors (437935172404).

513151340252 is a wasteful number, since it uses less digits than its factorization.

513151340252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962437 (or 1962435 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 513151340252 its reverse (252043151315), we get a palindrome (765194491567).

The spelling of 513151340252 in words is "five hundred thirteen billion, one hundred fifty-one million, three hundred forty thousand, two hundred fifty-two".