5450128681531 has 2 divisors, whose sum is σ = 5450128681532. Its totient is φ = 5450128681530.

The previous prime is 5450128681513. The next prime is 5450128681573. The reversal of 5450128681531 is 1351868210545.

5450128681531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (5450128681513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5450128681531 - 2¹⁷ = 5450128550459 is a prime.

It is a super-2 number, since 2×5450128681531² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5450128681331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2725064340765 + 2725064340766.

It is an arithmetic number, because the mean of its divisors is an integer number (2725064340766).

Almost surely, 2^{5450128681531} is an apocalyptic number.

5450128681531 is a deficient number, since it is larger than the sum of its proper divisors (1).

5450128681531 is an equidigital number, since it uses as much as digits as its factorization.

5450128681531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 5450128681531 in words is "five trillion, four hundred fifty billion, one hundred twenty-eight million, six hundred eighty-one thousand, five hundred thirty-one".