518842409464 has 16 divisors (see below), whose sum is σ = 979930465200. Its totient is φ = 257527618752.

The previous prime is 518842409431. The next prime is 518842409473. The reversal of 518842409464 is 464904248815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236697084 + ... + 236699275.

It is an arithmetic number, because the mean of its divisors is an integer number (61245654075).

Almost surely, 2^518842409464 is an apocalyptic number.

It is an amenable number.

518842409464 is a deficient number, since it is larger than the sum of its proper divisors (461088055736).

518842409464 is a wasteful number, since it uses less digits than its factorization.

518842409464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473396502 (or 473396498 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 55.

The spelling of 518842409464 in words is "five hundred eighteen billion, eight hundred forty-two million, four hundred nine thousand, four hundred sixty-four".