511201006243 has 2 divisors, whose sum is σ = 511201006244. Its totient is φ = 511201006242.

The previous prime is 511201006231. The next prime is 511201006273. The reversal of 511201006243 is 342600102115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511201006243 is a prime.

It is a super-2 number, since 2×511201006243² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511201006273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255600503121 + 255600503122.

It is an arithmetic number, because the mean of its divisors is an integer number (255600503122).

Almost surely, 2^511201006243 is an apocalyptic number.

511201006243 is a deficient number, since it is larger than the sum of its proper divisors (1).

511201006243 is an equidigital number, since it uses as much as digits as its factorization.

511201006243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 511201006243 its reverse (342600102115), we get a palindrome (853801108358).

The spelling of 511201006243 in words is "five hundred eleven billion, two hundred one million, six thousand, two hundred forty-three".