144773263505 has 16 divisors (see below), whose sum is σ = 187224503760. Its totient is φ = 106833543168.

The previous prime is 144773263451. The next prime is 144773263507. The reversal of 144773263505 is 505362377441.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 32483934289 + 112289329216 = 180233^2 + 335096^2 .

It is a cyclic number.

It is not a de Polignac number, because 144773263505 - 2⁶ = 144773263441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144773263505.

It is not an unprimeable number, because it can be changed into a prime (144773263507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698792 + ... + 881961.

It is an arithmetic number, because the mean of its divisors is an integer number (11701531485).

Almost surely, 2^144773263505 is an apocalyptic number.

It is an amenable number.

144773263505 is a deficient number, since it is larger than the sum of its proper divisors (42451240255).

144773263505 is a wasteful number, since it uses less digits than its factorization.

144773263505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582180.

The product of its (nonzero) digits is 2116800, while the sum is 47.

The spelling of 144773263505 in words is "one hundred forty-four billion, seven hundred seventy-three million, two hundred sixty-three thousand, five hundred five".