5211231546481 has 2 divisors, whose sum is σ = 5211231546482. Its totient is φ = 5211231546480.

The previous prime is 5211231546383. The next prime is 5211231546503. The reversal of 5211231546481 is 1846451321125.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5025147155856 + 186084390625 = 2241684^2 + 431375^2 .

It is a cyclic number.

It is not a de Polignac number, because 5211231546481 - 2¹⁷ = 5211231415409 is a prime.

It is a super-2 number, since 2×5211231546481² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5211231547481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2605615773240 + 2605615773241.

It is an arithmetic number, because the mean of its divisors is an integer number (2605615773241).

Almost surely, 2^{5211231546481} is an apocalyptic number.

It is an amenable number.

5211231546481 is a deficient number, since it is larger than the sum of its proper divisors (1).

5211231546481 is an equidigital number, since it uses as much as digits as its factorization.

5211231546481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 43.

The spelling of 5211231546481 in words is "five trillion, two hundred eleven billion, two hundred thirty-one million, five hundred forty-six thousand, four hundred eighty-one".