145011426509 has 2 divisors, whose sum is σ = 145011426510. Its totient is φ = 145011426508.

The previous prime is 145011426457. The next prime is 145011426529. The reversal of 145011426509 is 905624110541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91660590025 + 53350836484 = 302755^2 + 230978^2 .

It is an emirp because it is prime and its reverse (905624110541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145011426509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145011426529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72505713254 + 72505713255.

It is an arithmetic number, because the mean of its divisors is an integer number (72505713255).

Almost surely, 2^145011426509 is an apocalyptic number.

It is an amenable number.

145011426509 is a deficient number, since it is larger than the sum of its proper divisors (1).

145011426509 is an equidigital number, since it uses as much as digits as its factorization.

145011426509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 145011426509 in words is "one hundred forty-five billion, eleven million, four hundred twenty-six thousand, five hundred nine".