518143497330 has 16 divisors (see below), whose sum is σ = 1243544393664. Its totient is φ = 138171599280.

The previous prime is 518143497317. The next prime is 518143497331. The reversal of 518143497330 is 33794341815.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 518143497330.

It is not an unprimeable number, because it can be changed into a prime (518143497331) 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, 8635724926 + ... + 8635724985.

It is an arithmetic number, because the mean of its divisors is an integer number (77721524604).

Almost surely, 2^518143497330 is an apocalyptic number.

518143497330 is an abundant number, since it is smaller than the sum of its proper divisors (725400896334).

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

518143497330 is a wasteful number, since it uses less digits than its factorization.

518143497330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17271449921.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 518143497330 in words is "five hundred eighteen billion, one hundred forty-three million, four hundred ninety-seven thousand, three hundred thirty".