509181910046 has 16 divisors (see below), whose sum is σ = 765871605648. Its totient is φ = 253892184000.

The previous prime is 509181910031. The next prime is 509181910049. The reversal of 509181910046 is 640019181905.

It is a junction number, because it is equal to n+sod(n) for n = 509181909979 and 509181910006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509181910049) 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, 1062521 + ... + 1465371.

It is an arithmetic number, because the mean of its divisors is an integer number (47866975353).

Almost surely, 2^509181910046 is an apocalyptic number.

509181910046 is a deficient number, since it is larger than the sum of its proper divisors (256689695602).

509181910046 is a wasteful number, since it uses less digits than its factorization.

509181910046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404587.

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 509181910046 in words is "five hundred nine billion, one hundred eighty-one million, nine hundred ten thousand, forty-six".