500000000001 has 4 divisors (see below), whose sum is σ = 666666666672.
Its totient is φ = 333333333332.
The previous prime is 499999999979. The next prime is 500000000023. The reversal of 500000000001 is 100000000005.
Adding to 500000000001 its reverse (100000000005), we get a palindrome (600000000006).
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 an interprime number because it is at equal distance from previous prime (499999999979) and next prime (500000000023).
It is a cyclic number.
It is a trimorphic number since its cube, 125000000000750000000001500000000001, ends in 500000000001.
It is not a de Polignac number, because 500000000001 - 219 = 499999475713 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 499999999899 and 499999999908.
It is not an unprimeable number, because it can be changed into a prime (500000010001) 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, 83333333331 + ... + 83333333336.
It is an arithmetic number, because the mean of its divisors is an integer number (166666666668).
Almost surely, 2500000000001 is an apocalyptic number.
It is an amenable number.
500000000001 is a deficient number, since it is larger than the sum of its proper divisors (166666666671).
500000000001 is a wasteful number, since it uses less digits than its factorization.
500000000001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 166666666670.
The product of its (nonzero) digits is 5, while the sum is 6.
The spelling of 500000000001 in words is "five hundred billion, one", and thus it is an aban number.