513135739550 has 36 divisors (see below), whose sum is σ = 1110258191160. Its totient is φ = 175932252720.

The previous prime is 513135739507. The next prime is 513135739601. The reversal of 513135739550 is 55937531315.

It is a junction number, because it is equal to n+sod(n) for n = 513135739495 and 513135739504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 104719130 + ... + 104724029.

It is an arithmetic number, because the mean of its divisors is an integer number (30840505310).

Almost surely, 2^513135739550 is an apocalyptic number.

513135739550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

513135739550 is an abundant number, since it is smaller than the sum of its proper divisors (597122451610).

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

513135739550 is a wasteful number, since it uses less digits than its factorization.

513135739550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209443185 (or 209443173 counting only the distinct ones).

The product of its (nonzero) digits is 1063125, while the sum is 47.

The spelling of 513135739550 in words is "five hundred thirteen billion, one hundred thirty-five million, seven hundred thirty-nine thousand, five hundred fifty".