144785902561 has 2 divisors, whose sum is σ = 144785902562. Its totient is φ = 144785902560.

The previous prime is 144785902519. The next prime is 144785902567. The reversal of 144785902561 is 165209587441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104833488400 + 39952414161 = 323780^2 + 199881^2 .

It is a cyclic number.

It is not a de Polignac number, because 144785902561 - 2⁹ = 144785902049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144785902499 and 144785902508.

It is not a weakly prime, because it can be changed into another prime (144785902567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72392951280 + 72392951281.

It is an arithmetic number, because the mean of its divisors is an integer number (72392951281).

Almost surely, 2^144785902561 is an apocalyptic number.

It is an amenable number.

144785902561 is a deficient number, since it is larger than the sum of its proper divisors (1).

144785902561 is an equidigital number, since it uses as much as digits as its factorization.

144785902561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 144785902561 in words is "one hundred forty-four billion, seven hundred eighty-five million, nine hundred two thousand, five hundred sixty-one".