145427538689 has 2 divisors, whose sum is σ = 145427538690. Its totient is φ = 145427538688.

The previous prime is 145427538647. The next prime is 145427538701. The reversal of 145427538689 is 986835724541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107600400625 + 37827138064 = 328025^2 + 194492^2 .

It is a cyclic number.

It is not a de Polignac number, because 145427538689 - 2⁸ = 145427538433 is a prime.

It is a super-2 number, since 2×145427538689² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145427538889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72713769344 + 72713769345.

It is an arithmetic number, because the mean of its divisors is an integer number (72713769345).

Almost surely, 2^145427538689 is an apocalyptic number.

It is an amenable number.

145427538689 is a deficient number, since it is larger than the sum of its proper divisors (1).

145427538689 is an equidigital number, since it uses as much as digits as its factorization.

145427538689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58060800, while the sum is 62.

The spelling of 145427538689 in words is "one hundred forty-five billion, four hundred twenty-seven million, five hundred thirty-eight thousand, six hundred eighty-nine".