145536209999 has 2 divisors, whose sum is σ = 145536210000. Its totient is φ = 145536209998.

The previous prime is 145536209947. The next prime is 145536210041. The reversal of 145536209999 is 999902635541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145536209999 - 2⁸ = 145536209743 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145536209909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72768104999 + 72768105000.

It is an arithmetic number, because the mean of its divisors is an integer number (72768105000).

Almost surely, 2^145536209999 is an apocalyptic number.

145536209999 is a deficient number, since it is larger than the sum of its proper divisors (1).

145536209999 is an equidigital number, since it uses as much as digits as its factorization.

145536209999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23619600, while the sum is 62.

The spelling of 145536209999 in words is "one hundred forty-five billion, five hundred thirty-six million, two hundred nine thousand, nine hundred ninety-nine".