154441144439 has 2 divisors, whose sum is σ = 154441144440. Its totient is φ = 154441144438.

The previous prime is 154441144427. The next prime is 154441144463. The reversal of 154441144439 is 934441144451.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154441144439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154441144439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154441144409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77220572219 + 77220572220.

It is an arithmetic number, because the mean of its divisors is an integer number (77220572220).

Almost surely, 2^154441144439 is an apocalyptic number.

154441144439 is a deficient number, since it is larger than the sum of its proper divisors (1).

154441144439 is an equidigital number, since it uses as much as digits as its factorization.

154441144439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 44.

The spelling of 154441144439 in words is "one hundred fifty-four billion, four hundred forty-one million, one hundred forty-four thousand, four hundred thirty-nine".