145827428809 has 2 divisors, whose sum is σ = 145827428810. Its totient is φ = 145827428808.

The previous prime is 145827428777. The next prime is 145827428881. The reversal of 145827428809 is 908824728541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110782465600 + 35044963209 = 332840^2 + 187203^2 .

It is a cyclic number.

It is not a de Polignac number, because 145827428809 - 2⁵ = 145827428777 is a prime.

It is not a weakly prime, because it can be changed into another prime (145827428009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72913714404 + 72913714405.

It is an arithmetic number, because the mean of its divisors is an integer number (72913714405).

Almost surely, 2^145827428809 is an apocalyptic number.

It is an amenable number.

145827428809 is a deficient number, since it is larger than the sum of its proper divisors (1).

145827428809 is an equidigital number, since it uses as much as digits as its factorization.

145827428809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10321920, while the sum is 58.

The spelling of 145827428809 in words is "one hundred forty-five billion, eight hundred twenty-seven million, four hundred twenty-eight thousand, eight hundred nine".