144773304721 has 2 divisors, whose sum is σ = 144773304722. Its totient is φ = 144773304720.

The previous prime is 144773304719. The next prime is 144773304727. The reversal of 144773304721 is 127403377441.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99659544721 + 45113760000 = 315689^2 + 212400^2 .

It is a cyclic number.

It is not a de Polignac number, because 144773304721 - 2¹ = 144773304719 is a prime.

Together with 144773304719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (144773304727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72386652360 + 72386652361.

It is an arithmetic number, because the mean of its divisors is an integer number (72386652361).

Almost surely, 2^144773304721 is an apocalyptic number.

It is an amenable number.

144773304721 is a deficient number, since it is larger than the sum of its proper divisors (1).

144773304721 is an equidigital number, since it uses as much as digits as its factorization.

144773304721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 43.

The spelling of 144773304721 in words is "one hundred forty-four billion, seven hundred seventy-three million, three hundred four thousand, seven hundred twenty-one".