518401137084047 has 4 divisors (see below), whose sum is σ = 592458442381776. Its totient is φ = 444343831786320.

The previous prime is 518401137083987. The next prime is 518401137084049. The reversal of 518401137084047 is 740480731104815.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-518401137084047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 518401137084047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518401137084049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37028652648854 + ... + 37028652648867.

It is an arithmetic number, because the mean of its divisors is an integer number (148114610595444).

Almost surely, 2^{518401137084047} is an apocalyptic number.

518401137084047 is a deficient number, since it is larger than the sum of its proper divisors (74057305297729).

518401137084047 is an equidigital number, since it uses as much as digits as its factorization.

518401137084047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74057305297728.

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 518401137084047 in words is "five hundred eighteen trillion, four hundred one billion, one hundred thirty-seven million, eighty-four thousand, forty-seven".