144965966609 has 4 divisors (see below), whose sum is σ = 144993277620. Its totient is φ = 144938655600.

The previous prime is 144965966573. The next prime is 144965966627. The reversal of 144965966609 is 906669569441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34939086400 + 110026880209 = 186920^2 + 331703^2 .

It is a cyclic number.

It is not a de Polignac number, because 144965966609 - 2¹² = 144965962513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144965966669) 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, 13647542 + ... + 13658159.

It is an arithmetic number, because the mean of its divisors is an integer number (36248319405).

Almost surely, 2^144965966609 is an apocalyptic number.

It is an amenable number.

144965966609 is a deficient number, since it is larger than the sum of its proper divisors (27311011).

144965966609 is an equidigital number, since it uses as much as digits as its factorization.

144965966609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27311010.

The product of its (nonzero) digits is 75582720, while the sum is 65.

The spelling of 144965966609 in words is "one hundred forty-four billion, nine hundred sixty-five million, nine hundred sixty-six thousand, six hundred nine".