513666250256 has 40 divisors (see below), whose sum is σ = 1005019673880. Its totient is φ = 254315787264.

The previous prime is 513666250177. The next prime is 513666250259. The reversal of 513666250256 is 652052666315.

It can be written as a sum of positive squares in 4 ways, for example, as 263682250000 + 249984000256 = 513500^2 + 499984^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 513666250256.

It is not an unprimeable number, because it can be changed into a prime (513666250259) 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, 575090 + ... + 1165358.

It is an arithmetic number, because the mean of its divisors is an integer number (25125491847).

Almost surely, 2^513666250256 is an apocalyptic number.

It is an amenable number.

513666250256 is a deficient number, since it is larger than the sum of its proper divisors (491353423624).

513666250256 is a wasteful number, since it uses less digits than its factorization.

513666250256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590811 (or 590805 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 513666250256 in words is "five hundred thirteen billion, six hundred sixty-six million, two hundred fifty thousand, two hundred fifty-six".