513244306436 has 6 divisors (see below), whose sum is σ = 898177536270. Its totient is φ = 256622153216.

The previous prime is 513244306397. The next prime is 513244306441. The reversal of 513244306436 is 634603442315.

It can be written as a sum of positive squares in only one way, i.e., 474368297536 + 38876008900 = 688744^2 + 197170^2 .

It is a junction number, because it is equal to n+sod(n) for n = 513244306393 and 513244306402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64155538301 + ... + 64155538308.

It is an arithmetic number, because the mean of its divisors is an integer number (149696256045).

Almost surely, 2^513244306436 is an apocalyptic number.

It is an amenable number.

513244306436 is a deficient number, since it is larger than the sum of its proper divisors (384933229834).

513244306436 is a wasteful number, since it uses less digits than its factorization.

513244306436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128311076613 (or 128311076611 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 41.

The spelling of 513244306436 in words is "five hundred thirteen billion, two hundred forty-four million, three hundred six thousand, four hundred thirty-six".