144612113509 has 2 divisors, whose sum is σ = 144612113510. Its totient is φ = 144612113508.

The previous prime is 144612113483. The next prime is 144612113567. The reversal of 144612113509 is 905311216441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131819824900 + 12792288609 = 363070^2 + 113103^2 .

It is a cyclic number.

It is not a de Polignac number, because 144612113509 - 2⁷ = 144612113381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144612111509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72306056754 + 72306056755.

It is an arithmetic number, because the mean of its divisors is an integer number (72306056755).

Almost surely, 2^144612113509 is an apocalyptic number.

It is an amenable number.

144612113509 is a deficient number, since it is larger than the sum of its proper divisors (1).

144612113509 is an equidigital number, since it uses as much as digits as its factorization.

144612113509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

It can be divided in two parts, 144612 and 113509, that added together give a triangular number (258121 = T₇₁₈).

The spelling of 144612113509 in words is "one hundred forty-four billion, six hundred twelve million, one hundred thirteen thousand, five hundred nine".