501568422509 has 16 divisors (see below), whose sum is σ = 634139559936. Its totient is φ = 385327849200.

The previous prime is 501568422503. The next prime is 501568422527. The reversal of 501568422509 is 905224865105.

It is not a de Polignac number, because 501568422509 - 2⁴ = 501568422493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501568422503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45866897 + ... + 45877830.

It is an arithmetic number, because the mean of its divisors is an integer number (39633722496).

Almost surely, 2^501568422509 is an apocalyptic number.

It is an amenable number.

501568422509 is a deficient number, since it is larger than the sum of its proper divisors (132571137427).

501568422509 is a wasteful number, since it uses less digits than its factorization.

501568422509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91744816.

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 501568422509 in words is "five hundred one billion, five hundred sixty-eight million, four hundred twenty-two thousand, five hundred nine".