144945635729 has 4 divisors (see below), whose sum is σ = 145310738484. Its totient is φ = 144580532976.

The previous prime is 144945635579. The next prime is 144945635753. The reversal of 144945635729 is 927536549441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 927536549441 = 277051 ⋅3347891.

It can be written as a sum of positive squares in 2 ways, for example, as 126896250625 + 18049385104 = 356225^2 + 134348^2 .

It is a cyclic number.

It is not a de Polignac number, because 144945635729 - 2²⁴ = 144928858513 is a prime.

It is a super-2 number, since 2×144945635729² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144945635789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182550782 + ... + 182551575.

It is an arithmetic number, because the mean of its divisors is an integer number (36327684621).

Almost surely, 2^144945635729 is an apocalyptic number.

It is an amenable number.

144945635729 is a deficient number, since it is larger than the sum of its proper divisors (365102755).

144945635729 is an equidigital number, since it uses as much as digits as its factorization.

144945635729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365102754.

The product of its digits is 32659200, while the sum is 59.

The spelling of 144945635729 in words is "one hundred forty-four billion, nine hundred forty-five million, six hundred thirty-five thousand, seven hundred twenty-nine".