511127228189 has 2 divisors, whose sum is σ = 511127228190. Its totient is φ = 511127228188.

The previous prime is 511127228177. The next prime is 511127228323. The reversal of 511127228189 is 981822721115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405724411225 + 105402816964 = 636965^2 + 324658^2 .

It is a cyclic number.

It is not a de Polignac number, because 511127228189 - 2⁴ = 511127228173 is a prime.

It is a super-2 number, since 2×511127228189² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511127224189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255563614094 + 255563614095.

It is an arithmetic number, because the mean of its divisors is an integer number (255563614095).

Almost surely, 2^511127228189 is an apocalyptic number.

It is an amenable number.

511127228189 is a deficient number, since it is larger than the sum of its proper divisors (1).

511127228189 is an equidigital number, since it uses as much as digits as its factorization.

511127228189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 47.

The spelling of 511127228189 in words is "five hundred eleven billion, one hundred twenty-seven million, two hundred twenty-eight thousand, one hundred eighty-nine".