145521225033469 has 2 divisors, whose sum is σ = 145521225033470. Its totient is φ = 145521225033468.

The previous prime is 145521225033407. The next prime is 145521225033539. The reversal of 145521225033469 is 964330522125541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99663543484569 + 45857681548900 = 9983163^2 + 6771830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145521225033469 is a prime.

It is a super-3 number, since 3×145521225033469³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145521235033469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72760612516734 + 72760612516735.

It is an arithmetic number, because the mean of its divisors is an integer number (72760612516735).

Almost surely, 2^{145521225033469} is an apocalyptic number.

It is an amenable number.

145521225033469 is a deficient number, since it is larger than the sum of its proper divisors (1).

145521225033469 is an equidigital number, since it uses as much as digits as its factorization.

145521225033469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 145521225033469 in words is "one hundred forty-five trillion, five hundred twenty-one billion, two hundred twenty-five million, thirty-three thousand, four hundred sixty-nine".