145021873013 has 2 divisors, whose sum is σ = 145021873014. Its totient is φ = 145021873012.

The previous prime is 145021872917. The next prime is 145021873039. The reversal of 145021873013 is 310378120541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144885287044 + 136585969 = 380638^2 + 11687^2 .

It is a cyclic number.

It is not a de Polignac number, because 145021873013 - 2²⁴ = 145005095797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145021873093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72510936506 + 72510936507.

It is an arithmetic number, because the mean of its divisors is an integer number (72510936507).

Almost surely, 2^145021873013 is an apocalyptic number.

It is an amenable number.

145021873013 is a deficient number, since it is larger than the sum of its proper divisors (1).

145021873013 is an equidigital number, since it uses as much as digits as its factorization.

145021873013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

Adding to 145021873013 its reverse (310378120541), we get a palindrome (455399993554).

The spelling of 145021873013 in words is "one hundred forty-five billion, twenty-one million, eight hundred seventy-three thousand, thirteen".