516940390356 has 24 divisors (see below), whose sum is σ = 1298978417184. Its totient is φ = 159058581600.

The previous prime is 516940390327. The next prime is 516940390391. The reversal of 516940390356 is 653093049615.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 516940390299 and 516940390308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1656860070 + ... + 1656860381.

It is an arithmetic number, because the mean of its divisors is an integer number (54124100716).

Almost surely, 2^516940390356 is an apocalyptic number.

It is an amenable number.

516940390356 is an abundant number, since it is smaller than the sum of its proper divisors (782038026828).

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

516940390356 is a wasteful number, since it uses less digits than its factorization.

516940390356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313720471 (or 3313720469 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 51.

The spelling of 516940390356 in words is "five hundred sixteen billion, nine hundred forty million, three hundred ninety thousand, three hundred fifty-six".