144620356121 has 2 divisors, whose sum is σ = 144620356122. Its totient is φ = 144620356120.

The previous prime is 144620356061. The next prime is 144620356123. The reversal of 144620356121 is 121653026441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135284931721 + 9335424400 = 367811^2 + 96620^2 .

It is a cyclic number.

It is not a de Polignac number, because 144620356121 - 2⁶ = 144620356057 is a prime.

Together with 144620356123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144620356123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72310178060 + 72310178061.

It is an arithmetic number, because the mean of its divisors is an integer number (72310178061).

Almost surely, 2^144620356121 is an apocalyptic number.

It is an amenable number.

144620356121 is a deficient number, since it is larger than the sum of its proper divisors (1).

144620356121 is an equidigital number, since it uses as much as digits as its factorization.

144620356121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 144620356121 in words is "one hundred forty-four billion, six hundred twenty million, three hundred fifty-six thousand, one hundred twenty-one".