154005244404181 has 2 divisors, whose sum is σ = 154005244404182. Its totient is φ = 154005244404180.

The previous prime is 154005244404091. The next prime is 154005244404239. The reversal of 154005244404181 is 181404442500451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139711809000625 + 14293435403556 = 11819975^2 + 3780666^2 .

It is an emirp because it is prime and its reverse (181404442500451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154005244404181 - 2³⁵ = 153970884665813 is a prime.

It is a super-2 number, since 2×154005244404181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154005244404881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77002622202090 + 77002622202091.

It is an arithmetic number, because the mean of its divisors is an integer number (77002622202091).

Almost surely, 2^{154005244404181} is an apocalyptic number.

It is an amenable number.

154005244404181 is a deficient number, since it is larger than the sum of its proper divisors (1).

154005244404181 is an equidigital number, since it uses as much as digits as its factorization.

154005244404181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 409600, while the sum is 43.

The spelling of 154005244404181 in words is "one hundred fifty-four trillion, five billion, two hundred forty-four million, four hundred four thousand, one hundred eighty-one".