501798655560 has 64 divisors (see below), whose sum is σ = 1505528856000. Its totient is φ = 133801162496.

The previous prime is 501798655543. The next prime is 501798655597. The reversal of 501798655560 is 65556897105.

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 501798655560.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1225162 + ... + 1582598.

It is an arithmetic number, because the mean of its divisors is an integer number (23523888375).

Almost surely, 2^501798655560 is an apocalyptic number.

It is an amenable number.

501798655560 is an abundant number, since it is smaller than the sum of its proper divisors (1003730200440).

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

501798655560 is a wasteful number, since it uses less digits than its factorization.

501798655560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369150 (or 369146 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 57.

The spelling of 501798655560 in words is "five hundred one billion, seven hundred ninety-eight million, six hundred fifty-five thousand, five hundred sixty".