501110002112009 has 2 divisors, whose sum is σ = 501110002112010. Its totient is φ = 501110002112008.

The previous prime is 501110002112003. The next prime is 501110002112023. The reversal of 501110002112009 is 900211200011105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 437339348275600 + 63770653836409 = 20912660^2 + 7985653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501110002112009 is a prime.

It is a super-2 number, since 2×501110002112009² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (501110002112003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250555001056004 + 250555001056005.

It is an arithmetic number, because the mean of its divisors is an integer number (250555001056005).

Almost surely, 2^{501110002112009} is an apocalyptic number.

It is an amenable number.

501110002112009 is a deficient number, since it is larger than the sum of its proper divisors (1).

501110002112009 is an equidigital number, since it uses as much as digits as its factorization.

501110002112009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 23.

The spelling of 501110002112009 in words is "five hundred one trillion, one hundred ten billion, two million, one hundred twelve thousand, nine".