144400121009 has 2 divisors, whose sum is σ = 144400121010. Its totient is φ = 144400121008.

The previous prime is 144400120999. The next prime is 144400121023. The reversal of 144400121009 is 900121004441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119318430625 + 25081690384 = 345425^2 + 158372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144400121009 is a prime.

It is not a weakly prime, because it can be changed into another prime (144400121309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72200060504 + 72200060505.

It is an arithmetic number, because the mean of its divisors is an integer number (72200060505).

Almost surely, 2^144400121009 is an apocalyptic number.

It is an amenable number.

144400121009 is a deficient number, since it is larger than the sum of its proper divisors (1).

144400121009 is an equidigital number, since it uses as much as digits as its factorization.

144400121009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 144400121009 in words is "one hundred forty-four billion, four hundred million, one hundred twenty-one thousand, nine".