500000000000001 has 4 divisors (see below), whose sum is σ = 666666666666672. Its totient is φ = 333333333333332.

The previous prime is 499999999999999. The next prime is 500000000000057. The reversal of 500000000000001 is 100000000000005.

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 trimorphic number since its cube, 125000000000000750000000000001500000000000001, ends in 500000000000001.

It is not a de Polignac number, because 500000000000001 - 2¹ = 499999999999999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (500000000000071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83333333333331 + ... + 83333333333336.

It is an arithmetic number, because the mean of its divisors is an integer number (166666666666668).

Almost surely, 2^{500000000000001} is an apocalyptic number.

It is an amenable number.

500000000000001 is a deficient number, since it is larger than the sum of its proper divisors (166666666666671).

500000000000001 is a wasteful number, since it uses less digits than its factorization.

500000000000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166666666666670.

The product of its (nonzero) digits is 5, while the sum is 6.

Adding to 500000000000001 its reverse (100000000000005), we get a palindrome (600000000000006).

The spelling of 500000000000001 in words is "five hundred trillion, one", and thus it is an aban number.