1000501000501 has 2 divisors, whose sum is σ = 1000501000502. Its totient is φ = 1000501000500.

The previous prime is 1000501000489. The next prime is 1000501000511. The reversal of 1000501000501 is 1050001050001.

1000501000501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 885573220401 + 114927780100 = 941049^2 + 339010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000501000501 - 2⁹ = 1000500999989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000501000511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500250500250 + 500250500251.

It is an arithmetic number, because the mean of its divisors is an integer number (500250500251).

Almost surely, 2^{1000501000501} is an apocalyptic number.

It is an amenable number.

1000501000501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000501000501 is an equidigital number, since it uses as much as digits as its factorization.

1000501000501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25, while the sum is 13.

Adding to 1000501000501 its reverse (1050001050001), we get a palindrome (2050502050502).

The spelling of 1000501000501 in words is "one trillion, five hundred one million, five hundred one", and thus it is an aban number.