513278122850 has 12 divisors (see below), whose sum is σ = 954697308594. Its totient is φ = 205311249120.

The previous prime is 513278122811. The next prime is 513278122873. The reversal of 513278122850 is 58221872315.

It can be written as a sum of positive squares in 3 ways, for example, as 289873483201 + 223404639649 = 538399^2 + 472657^2 .

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 5 ways as a sum of consecutive naturals, for example, 5132781179 + ... + 5132781278.

Almost surely, 2^513278122850 is an apocalyptic number.

513278122850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

513278122850 is a deficient number, since it is larger than the sum of its proper divisors (441419185744).

513278122850 is a wasteful number, since it uses less digits than its factorization.

513278122850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10265562469 (or 10265562464 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 513278122850 in words is "five hundred thirteen billion, two hundred seventy-eight million, one hundred twenty-two thousand, eight hundred fifty".