145509582109 has 2 divisors, whose sum is σ = 145509582110. Its totient is φ = 145509582108.

The previous prime is 145509582103. The next prime is 145509582191. The reversal of 145509582109 is 901285905541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115343102884 + 30166479225 = 339622^2 + 173685^2 .

It is a cyclic number.

It is not a de Polignac number, because 145509582109 - 2³¹ = 143362098461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145509582103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72754791054 + 72754791055.

It is an arithmetic number, because the mean of its divisors is an integer number (72754791055).

Almost surely, 2^145509582109 is an apocalyptic number.

It is an amenable number.

145509582109 is a deficient number, since it is larger than the sum of its proper divisors (1).

145509582109 is an equidigital number, since it uses as much as digits as its factorization.

145509582109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 49.

The spelling of 145509582109 in words is "one hundred forty-five billion, five hundred nine million, five hundred eighty-two thousand, one hundred nine".