516506556640 has 24 divisors (see below), whose sum is σ = 1220246740440. Its totient is φ = 206602622592.

The previous prime is 516506556619. The next prime is 516506556649. The reversal of 516506556640 is 46655605615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516506556649) 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, 1614082830 + ... + 1614083149.

It is an arithmetic number, because the mean of its divisors is an integer number (50843614185).

Almost surely, 2^516506556640 is an apocalyptic number.

It is an amenable number.

516506556640 is an abundant number, since it is smaller than the sum of its proper divisors (703740183800).

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

516506556640 is a wasteful number, since it uses less digits than its factorization.

516506556640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3228165994 (or 3228165986 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 49.

The spelling of 516506556640 in words is "five hundred sixteen billion, five hundred six million, five hundred fifty-six thousand, six hundred forty".