513781088044 has 24 divisors (see below), whose sum is σ = 1031271802400. Its totient is φ = 219396974976.

The previous prime is 513781088033. The next prime is 513781088057. The reversal of 513781088044 is 440880187315.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33113769 + ... + 33129280.

Almost surely, 2^513781088044 is an apocalyptic number.

It is an amenable number.

513781088044 is an abundant number, since it is smaller than the sum of its proper divisors (517490714356).

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

513781088044 is a wasteful number, since it uses less digits than its factorization.

513781088044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66243337 (or 66243335 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 513781088044 in words is "five hundred thirteen billion, seven hundred eighty-one million, eighty-eight thousand, forty-four".