513356121552 has 20 divisors (see below), whose sum is σ = 1326169980800. Its totient is φ = 171118707168.

The previous prime is 513356121517. The next prime is 513356121571. The reversal of 513356121552 is 255121653315.

It is a self number, because there is not a number n which added to its sum of digits gives 513356121552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5347459552 + ... + 5347459647.

It is an arithmetic number, because the mean of its divisors is an integer number (66308499040).

Almost surely, 2^513356121552 is an apocalyptic number.

It is an amenable number.

513356121552 is an abundant number, since it is smaller than the sum of its proper divisors (812813859248).

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

513356121552 is a wasteful number, since it uses less digits than its factorization.

513356121552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10694919210 (or 10694919204 counting only the distinct ones).

The product of its digits is 135000, while the sum is 39.

Adding to 513356121552 its reverse (255121653315), we get a palindrome (768477774867).

The spelling of 513356121552 in words is "five hundred thirteen billion, three hundred fifty-six million, one hundred twenty-one thousand, five hundred fifty-two".