513689825650 has 24 divisors (see below), whose sum is σ = 955578565620. Its totient is φ = 205451093760.

The previous prime is 513689825591. The next prime is 513689825659. The reversal of 513689825650 is 56528986315.

It can be written as a sum of positive squares in 6 ways, for example, as 9457757001 + 504232068649 = 97251^2 + 710093^2 .

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (513689825659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200299 + ... + 1033198.

Almost surely, 2^513689825650 is an apocalyptic number.

513689825650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

513689825650 is a deficient number, since it is larger than the sum of its proper divisors (441888739970).

513689825650 is a wasteful number, since it uses less digits than its factorization.

513689825650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241838 (or 1241833 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 58.

The spelling of 513689825650 in words is "five hundred thirteen billion, six hundred eighty-nine million, eight hundred twenty-five thousand, six hundred fifty".