144136934065 has 4 divisors (see below), whose sum is σ = 172964320884. Its totient is φ = 115309547248.

The previous prime is 144136934063. The next prime is 144136934069. The reversal of 144136934065 is 560439631441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560439631441 = 11351 ⋅49373591.

It can be written as a sum of positive squares in 2 ways, for example, as 89114787441 + 55022146624 = 298521^2 + 234568^2 .

It is a cyclic number.

It is not a de Polignac number, because 144136934065 - 2¹ = 144136934063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144136934063) 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, 14413693402 + ... + 14413693411.

It is an arithmetic number, because the mean of its divisors is an integer number (43241080221).

Almost surely, 2^144136934065 is an apocalyptic number.

It is an amenable number.

144136934065 is a deficient number, since it is larger than the sum of its proper divisors (28827386819).

144136934065 is an equidigital number, since it uses as much as digits as its factorization.

144136934065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28827386818.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 144136934065 in words is "one hundred forty-four billion, one hundred thirty-six million, nine hundred thirty-four thousand, sixty-five".