501501000660 has 48 divisors (see below), whose sum is σ = 1531857604032. Its totient is φ = 121576000000.

The previous prime is 501501000647. The next prime is 501501000701. The reversal of 501501000660 is 66000105105.

It is a self number, because there is not a number n which added to its sum of digits gives 501501000660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379924341 + ... + 379925660.

It is an arithmetic number, because the mean of its divisors is an integer number (31913700084).

Almost surely, 2^501501000660 is an apocalyptic number.

It is an amenable number.

501501000660 is an abundant number, since it is smaller than the sum of its proper divisors (1030356603372).

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

501501000660 is a wasteful number, since it uses less digits than its factorization.

501501000660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759850024 (or 759850022 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 501501000660 its reverse (66000105105), we get a palindrome (567501105765).

The spelling of 501501000660 in words is "five hundred one billion, five hundred one million, six hundred sixty", and thus it is an aban number.