516386533418 has 24 divisors (see below), whose sum is σ = 923018444964. Its totient is φ = 215910744000.

The previous prime is 516386533331. The next prime is 516386533469. The reversal of 516386533418 is 814335683615.

It can be written as a sum of positive squares in 2 ways, for example, as 426000319969 + 90386213449 = 652687^2 + 300643^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 516386533418.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64255133 + ... + 64263168.

Almost surely, 2^516386533418 is an apocalyptic number.

516386533418 is a deficient number, since it is larger than the sum of its proper divisors (406631911546).

516386533418 is a wasteful number, since it uses less digits than its factorization.

516386533418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128518358 (or 128518351 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 53.

The spelling of 516386533418 in words is "five hundred sixteen billion, three hundred eighty-six million, five hundred thirty-three thousand, four hundred eighteen".