518683720005 has 24 divisors (see below), whose sum is σ = 980783762400. Its totient is φ = 251483015520.

The previous prime is 518683719979. The next prime is 518683720007. The reversal of 518683720005 is 500027386815.

518683720005 is a `hidden beast` number, since 518 + 68 + 3 + 72 + 0 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 518683720005 - 2¹⁰ = 518683718981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518683720007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 523922455 + ... + 523923444.

It is an arithmetic number, because the mean of its divisors is an integer number (40865990100).

Almost surely, 2^518683720005 is an apocalyptic number.

518683720005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

518683720005 is a deficient number, since it is larger than the sum of its proper divisors (462100042395).

518683720005 is a wasteful number, since it uses less digits than its factorization.

518683720005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047845921 (or 1047845918 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 518683720005 in words is "five hundred eighteen billion, six hundred eighty-three million, seven hundred twenty thousand, five".