501471220240664 has 16 divisors (see below), whose sum is σ = 940258806695520. Its totient is φ = 250735538455200.

The previous prime is 501471220240583. The next prime is 501471220240681. The reversal of 501471220240664 is 466042022174105.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 31562642 + ... + 44711774.

It is an arithmetic number, because the mean of its divisors is an integer number (58766175418470).

Almost surely, 2^{501471220240664} is an apocalyptic number.

It is an amenable number.

501471220240664 is a deficient number, since it is larger than the sum of its proper divisors (438787586454856).

501471220240664 is a wasteful number, since it uses less digits than its factorization.

501471220240664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17916290 (or 17916286 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 501471220240664 in words is "five hundred one trillion, four hundred seventy-one billion, two hundred twenty million, two hundred forty thousand, six hundred sixty-four".