501600065501 has 4 divisors (see below), whose sum is σ = 501946715232. Its totient is φ = 501253415772.

The previous prime is 501600065459. The next prime is 501600065509. The reversal of 501600065501 is 105560006105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501600065501 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 (501600065509) by changing a digit.

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, 173322695 + ... + 173325588.

It is an arithmetic number, because the mean of its divisors is an integer number (125486678808).

Almost surely, 2^501600065501 is an apocalyptic number.

It is an amenable number.

501600065501 is a deficient number, since it is larger than the sum of its proper divisors (346649731).

501600065501 is a wasteful number, since it uses less digits than its factorization.

501600065501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346649730.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 501600065501 in words is "five hundred one billion, six hundred million, sixty-five thousand, five hundred one".