501011060561 has 16 divisors (see below), whose sum is σ = 553535078400. Its totient is φ = 449651202000.

The previous prime is 501011060521. The next prime is 501011060573. The reversal of 501011060561 is 165060110105.

It is not a de Polignac number, because 501011060561 - 2¹⁸ = 501010798417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 501011060561.

It is not an unprimeable number, because it can be changed into a prime (501011060521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9984986 + ... + 10035036.

It is an arithmetic number, because the mean of its divisors is an integer number (34595942400).

Almost surely, 2^501011060561 is an apocalyptic number.

It is an amenable number.

501011060561 is a deficient number, since it is larger than the sum of its proper divisors (52524017839).

501011060561 is a wasteful number, since it uses less digits than its factorization.

501011060561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61660.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 501011060561 its reverse (165060110105), we get a palindrome (666071170666).

The spelling of 501011060561 in words is "five hundred one billion, eleven million, sixty thousand, five hundred sixty-one".