154438075109 has 2 divisors, whose sum is σ = 154438075110. Its totient is φ = 154438075108.

The previous prime is 154438075081. The next prime is 154438075177. The reversal of 154438075109 is 901570834451.

154438075109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154117486084 + 320589025 = 392578^2 + 17905^2 .

It is a cyclic number.

It is not a de Polignac number, because 154438075109 - 2²⁴ = 154421297893 is a prime.

It is a super-2 number, since 2×154438075109² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154438075189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77219037554 + 77219037555.

It is an arithmetic number, because the mean of its divisors is an integer number (77219037555).

Almost surely, 2^154438075109 is an apocalyptic number.

It is an amenable number.

154438075109 is a deficient number, since it is larger than the sum of its proper divisors (1).

154438075109 is an equidigital number, since it uses as much as digits as its factorization.

154438075109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 154438075109 in words is "one hundred fifty-four billion, four hundred thirty-eight million, seventy-five thousand, one hundred nine".